{"id":666,"date":"2026-10-02T13:17:53","date_gmt":"2026-10-02T11:17:53","guid":{"rendered":"https:\/\/www.valfonta.com\/producto\/bellow-pressure-reducing-valve\/"},"modified":"2026-10-22T09:21:52","modified_gmt":"2026-10-22T07:21:52","slug":"bellow-pressure-reducing-valve","status":"publish","type":"product","link":"https:\/\/www.valfonta.com\/en\/product\/bellow-pressure-reducing-valve\/","title":{"rendered":"M2F bellows pressure reducing valve"},"content":{"rendered":"<div class=\"wp-block-group vf-raiz vf-pl-ficha-producto is-layout-flow wp-block-group-is-layout-flow\"><nav class=\"wp-block-group vf-breadcrumbs vfa-aria-label--Breadcrumbs is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a href=\"\/en\/\">Home<\/a><span aria-hidden=\"true\" class=\"vf-sep\">\u203a<\/span><a href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\">Pressure reducing valves<\/a><span aria-hidden=\"true\" class=\"vf-sep\">\u203a<\/span><span aria-current=\"page\">M2F bellows pressure reducing valve<\/span><\/p><\/nav><article class=\"wp-block-group vf-pdp vfd-model--M2F is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-pdp-hero is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-pdp-title is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-pdp-eyebrow wp-block-paragraph\">Pressure reducing valve \u00b7 Bellows-balanced<\/p><h1 class=\"wp-block-heading\">M2F bellows pressure reducing valve<\/h1><\/div><div class=\"wp-block-group vf-pdp-media is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><span class=\"vf-pdp-badge\">No water seal pot<\/span><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-M2F-700x700-1.jpg\" alt=\"M2F bellows pressure reducing valve with flanged body and spring cap\" class=\"wp-image-202\" width=\"700\" height=\"700\" fetchpriority=\"high\"><\/p><\/div><div class=\"wp-block-group vf-pdp-body is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-lead wp-block-paragraph\">Self-operated reducing valve balanced by an AISI 316Ti stainless steel bellows, which maintains the outlet pressure even when the inlet pressure fluctuates. It works with steam up to 200 \u00b0C without a condensate pot, and also with compressed air, gases, and liquids, from DN15 to DN50.<\/p><ul class=\"vf-pdp-keys wp-block-list\"><li><span>Sizes<\/span><b>DN15 to DN50<\/b><\/li><li><span>Pressure rating<\/span><b>PN25 to PN40 \u00b7 Class 150\/300<\/b><\/li><li><span>Inlet pressure<\/span><b>up to 25 barg<\/b><\/li><li><span>Outlet pressure<\/span><b>1 to 10 barg <small>in two ranges<\/small><\/b><\/li><li><span>Temperature<\/span><b>up to 200 \u00b0C <small>with steam<\/small><\/b><\/li><li><span>Kv<\/span><b>3.5 to 32 m\u00b3\/h<\/b><\/li><\/ul><div class=\"wp-block-group vf-pdp-cta is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Request a quote<\/a><a class=\"vf-btn vf-btn--sec\" href=\"\/wp-content\/uploads\/2026\/10\/M2F-16A-ENG.pdf\" rel=\"noopener\" target=\"_blank\">Download datasheet <small>PDF<\/small><\/a><\/p><\/div><p class=\"vf-pdp-contact wp-block-paragraph\">Questions about sizing? Call <a href=\"tel:+34933720888\">933 720 888<\/a> or email <a href=\"mailto:valfonta@valfonta.com\">valfonta@valfonta.com<\/a>.<\/p><\/div><\/div><ul class=\"vf-pdp-trust wp-block-list\"><li>In-house design and manufacturing in Badalona<\/li><li>ATEX II 2 GD marking for zones 1 and 21<\/li><li>Steam up to 200 \u00b0C without a condensate pot<\/li><li>Recommended spare parts marked in the exploded view<\/li><\/ul><nav class=\"wp-block-group vf-pdp-nav vfa-aria-label--Datasheet%20contents is-layout-flow wp-block-group-is-layout-flow\"><ul class=\"wp-block-list\"><li><a href=\"#aplicaciones\">Applications<\/a><\/li><li><a href=\"#especificaciones\">Specifications<\/a><\/li><li><a href=\"#funcionamiento\">Operation<\/a><\/li><li><a href=\"#instalacion\">Installation<\/a><\/li><li><a href=\"#documentacion\">Documentation<\/a><\/li><li><a href=\"#comparar\">Compare<\/a><\/li><li><a href=\"#preguntas\">FAQ<\/a><\/li><li><a href=\"#solicitar\">Request a quote<\/a><\/li><\/ul><\/nav><section id=\"aplicaciones\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-pdp-two is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">What the M2F is used for<\/h2><p class=\"wp-block-paragraph\">The <strong>M2F<\/strong> is the bellows version of the M2 <a href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\">pressure reducing valve<\/a>. Instead of a diaphragm, an <strong>AISI 316Ti stainless steel bellows<\/strong> receives the outlet pressure and opposes the adjusting spring, with no auxiliary power. The valve closes when the outlet pressure rises.<\/p><p class=\"wp-block-paragraph\">Its main difference is that it <strong>does not need a condensate pot<\/strong>: it works with steam up to 200 \u00b0C connected directly. It is supplied with internal pressure sensing, and external sensing is optional.<\/p><ul class=\"vf-pdp-apps wp-block-list\"><li><b>Steam<\/b><span>Steam pressure reduction up to 200 \u00b0C, with no water seal pot.<\/span><\/li><li><b>Chemical laboratories<\/b><span>Stable pressure in laboratory installations.<\/span><\/li><li><b>Water networks<\/b><span>Water distribution and wastewater installations.<\/span><\/li><li><b>Compressed air<\/b><span>Reducing line pressure to the working value.<\/span><\/li><li><b>Fire protection<\/b><span>Fire protection networks and sprinklers.<\/span><\/li><li><b>Inert gas and fuel oil<\/b><span>Inert gas protection and fuel oil lines.<\/span><\/li><\/ul><\/div><aside class=\"wp-block-group vf-pdp-fit is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Choose the M2F if\u2026<\/h3><ul class=\"vf-si wp-block-list\"><li>You regulate steam up to 200 \u00b0C and want to do without the water seal pot.<\/li><li>You work with sizes from DN15 to DN50 with up to 25 barg inlet pressure.<\/li><li>You need an outlet pressure of 1 to 4 or 3 to 10 barg.<\/li><li>You prefer internal pressure sensing, with no control line.<\/li><\/ul><h3 class=\"wp-block-heading\">Choose another model if\u2026<\/h3><ul class=\"vf-no wp-block-list\"><li>You need more than DN50: the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-m2\/\">M2<\/a> goes up to DN100 and the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valves-m1\/\">M1<\/a> up to DN150.<\/li><li>The inlet pressure exceeds 25 barg: the M2 and the M1 accept 40 barg up to DN50.<\/li><li>You require outlet pressures below 1 barg: the M2 regulates from 0.02 barg and the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv45\/\">PRV45<\/a> from 0.01 barg.<\/li><li>The steam exceeds 200 \u00b0C: the M1 reaches 220 \u00b0C and the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv44\/\">PRV44<\/a> 210 \u00b0C.<\/li><\/ul><\/aside><\/div><\/section><section id=\"especificaciones\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">M2F technical specifications<\/h2><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl\"><table><tbody><tr><th scope=\"row\">Type<\/th><td>Self-operated, direct-acting, bellows-balanced pressure reducing valve<\/td><\/tr><tr><th scope=\"row\">Sizes<\/th><td>DN15 to DN50<\/td><\/tr><tr><th scope=\"row\">Connections<\/th><td>EN PN16 to PN40 flanges \u00b7 ANSI 150\/300 flanges \u00b7 BSP or NPT thread \u00b7 BW and SW ends: on request<\/td><\/tr><tr><th scope=\"row\">Pressure rating<\/th><td>PN25 or PN40 depending on material \u00b7 Class 150 or 300<\/td><\/tr><tr><th scope=\"row\">Maximum inlet pressure<\/th><td>25 barg<\/td><\/tr><tr><th scope=\"row\">Maximum differential pressure<\/th><td>25 bar (DN15 to DN25) \u00b7 16 bar (DN40 to DN50)<\/td><\/tr><tr><th scope=\"row\">Outlet pressure ranges<\/th><td>1 \u2013 4 barg \u00b7 3 \u2013 10 barg \u00b7 special ranges on request<\/td><\/tr><tr><th scope=\"row\">Kv coefficient<\/th><td>3.5 to 32 m\u00b3\/h depending on DN<\/td><\/tr><tr><th scope=\"row\">Maximum temperature<\/th><td>Steam: 200 \u00b0C \u00b7 Air and nitrogen: 150 \u00b0C \u00b7 Other gases: 80 \u00b0C<\/td><\/tr><tr><th scope=\"row\">Plug<\/th><td>Graphite-filled PTFE as standard (200 \u00b0C). On request: PEEK (200 \u00b0C), EPDM or FKM (150 \u00b0C), NBR (80 \u00b0C)<\/td><\/tr><tr><th scope=\"row\">Fluids<\/th><td>Steam, compressed air, gases, and liquids<\/td><\/tr><tr><th scope=\"row\">Materials<\/th><td>Body in RG10 bronze (PN25), A216 WCB carbon steel or A351 CF3M stainless (PN40). Internals in AISI 316L stainless. Bellows in AISI 316Ti<\/td><\/tr><tr><th scope=\"row\">Condensate tank<\/th><td>Not required<\/td><\/tr><tr><th scope=\"row\">Pressure sensing point<\/th><td>Internal as standard. External with 10 \u00d7 1 mm tubing, optional on request<\/td><\/tr><tr><th scope=\"row\">Mounting position<\/th><td>Horizontal pipe, following the arrow on the body<\/td><\/tr><tr><th scope=\"row\">Pressure Equipment Directive<\/th><td>PED 2014\/68\/EU: the nameplate indicates whether CE marking is required<\/td><\/tr><tr><th scope=\"row\">ATEX<\/th><td>II 2 GD c IIC Tx \/ c IIIC Tx\u00baC \u00b7 certificate LOM 14.034 U<\/td><\/tr><\/tbody><\/table><\/figure><\/div><h3 class=\"wp-block-heading\">Dimensions and weight<\/h3><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\"><\/th><th scope=\"col\">DN15<\/th><th scope=\"col\">DN20<\/th><th scope=\"col\">DN25<\/th><th scope=\"col\">DN32<\/th><th scope=\"col\">DN40<\/th><th scope=\"col\">DN50<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Kv (m\u00b3\/h)<\/th><td>3,5<\/td><td>5<\/td><td>9<\/td><td>13,5<\/td><td>22<\/td><td>32<\/td><\/tr><tr><th scope=\"row\">Length A (EN PN40, mm)<\/th><td>130<\/td><td>150<\/td><td>160<\/td><td>180<\/td><td>200<\/td><td>230<\/td><\/tr><tr><th scope=\"row\">Length A (ANSI 150, in.)<\/th><td>\u25cb<\/td><td>\u25cb<\/td><td>7,25\u2033<\/td><td>\u2013<\/td><td>8,75\u2033<\/td><td>10\u2033<\/td><\/tr><tr><th scope=\"row\">Length A (ANSI 300, in.)<\/th><td>\u25cb<\/td><td>\u25cb<\/td><td>7,76\u2033<\/td><td>\u2013<\/td><td>9,25\u2033<\/td><td>10,5\u2033<\/td><\/tr><tr><th scope=\"row\">Height H (mm)<\/th><td>340<\/td><td>340<\/td><td>350<\/td><td>350<\/td><td>365<\/td><td>365<\/td><\/tr><tr><th scope=\"row\">Approximate weight (kg)<\/th><td>11<\/td><td>12<\/td><td>14<\/td><td>15<\/td><td>18<\/td><td>22<\/td><\/tr><\/tbody><\/table><\/figure><\/div><p class=\"vf-note wp-block-paragraph\">\u25cb: on request. Cap diameter (D): 140 mm on all sizes.<\/p><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Exploded view and materials (29 parts)<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\">No.<\/th><th scope=\"col\">Part<\/th><th scope=\"col\">Material<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">1<\/th><td>Body<\/td><td>RG10, 1.0619 (WCB), or 1.4408 (CF3M)<\/td><\/tr><tr><th scope=\"row\">2<\/th><td>Seat<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">3<\/th><td>Stem<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">3b<\/th><td>Bushing guide<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">4<\/th><td>Screw<\/td><td>Galvanized steel 8.8 (A2-70 with CF3M body)<\/td><\/tr><tr><th scope=\"row\">5<\/th><td>Gasket <small>(spare part)<\/small><\/td><td>PTFE<\/td><\/tr><tr><th scope=\"row\">6<\/th><td>Nut <small>(spare part)<\/small><\/td><td>AISI 316L stainless<\/td><\/tr><tr><th scope=\"row\">6b<\/th><td>Spring washer<\/td><td>Galvanized steel (A2-70 with CF3M body)<\/td><\/tr><tr><th scope=\"row\">7<\/th><td>Nut<\/td><td>A2-70 stainless<\/td><\/tr><tr><th scope=\"row\">9<\/th><td>Gasket<\/td><td>Graphite<\/td><\/tr><tr><th scope=\"row\">10<\/th><td>Pusher<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">11<\/th><td>Cap<\/td><td>Steel 1.1192, epoxy-coated (316L on request)<\/td><\/tr><tr><th scope=\"row\">12<\/th><td>Spring guide<\/td><td>Galvanized steel 1.1191 (316L on request)<\/td><\/tr><tr><th scope=\"row\">14<\/th><td>Adjusting screw<\/td><td>Galvanized steel 8.8<\/td><\/tr><tr><th scope=\"row\">15<\/th><td>Adjusting nut<\/td><td>Galvanized steel 8.8<\/td><\/tr><tr><th scope=\"row\">16<\/th><td>Adjusting spring<\/td><td>Steel 52SiCrNi5 (epoxy)<\/td><\/tr><tr><th scope=\"row\">18<\/th><td>Stem<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">19<\/th><td>Bellows <small>(spare part)<\/small><\/td><td>AISI 316Ti stainless<\/td><\/tr><tr><th scope=\"row\">20<\/th><td>M8 screw<\/td><td>Galvanized steel 8.8 (A2-70 with CF3M body)<\/td><\/tr><tr><th scope=\"row\">21<\/th><td>Bellows support<\/td><td>Steel 1.1191, epoxy-coated (316L with CF3M body)<\/td><\/tr><tr><th scope=\"row\">23<\/th><td>Spring support<\/td><td>AISI 302 stainless<\/td><\/tr><tr><th scope=\"row\">24<\/th><td>Cover<\/td><td>Galvanized steel 1.1141 (316L on request)<\/td><\/tr><tr><th scope=\"row\">25<\/th><td>Gasket<\/td><td>Graphite<\/td><\/tr><tr><th scope=\"row\">26<\/th><td>Compensation gasket <small>(spare part)<\/small><\/td><td>Graphite-filled PTFE with stainless spring (NBR, EPDM, Viton on request)<\/td><\/tr><tr><th scope=\"row\">27<\/th><td>Guide stem<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">28<\/th><td>Seat <small>(spare part)<\/small><\/td><td>Graphite-filled PTFE (NBR, EPDM, Viton on request)<\/td><\/tr><tr><th scope=\"row\">29<\/th><td>Seat screw<\/td><td>A2-70 stainless<\/td><\/tr><tr><th scope=\"row\">30<\/th><td>Seat guide<\/td><td>1.4404 (316L)<\/td><\/tr><tr><th scope=\"row\">31<\/th><td>Seat holder<\/td><td>1.4404 (316L)<\/td><\/tr><\/tbody><\/table><\/figure><\/div><\/div><\/details><\/section><section id=\"funcionamiento\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">How the M2F works<\/h2><p class=\"wp-block-paragraph\">Direct-acting: balance between the adjusting spring and the outlet pressure on the bellows.<\/p><ol class=\"vf-steps wp-block-list\"><li><b>Closing by inlet pressure.<\/b> The fluid flows in the direction of the arrow, and the stem\u2013piston\u2013gasket assembly tends to close the valve.<\/li><li><b>Opening by the spring.<\/b> Turning the adjusting screw clockwise compresses the spring, which acts on the bellows and the seat and opens the passage until the required outlet pressure is reached.<\/li><li><b>Compensation.<\/b> The compensation gasket and the bellows absorb inlet pressure variations.<\/li><li><b>Closing as the outlet pressure rises.<\/b> If the downstream pressure increases, the valve closes.<\/li><\/ol><p class=\"wp-block-paragraph\">The M2F is not a safety valve: if necessary, install overpressure protection. More on this design in <a href=\"https:\/\/www.valfonta.com\/en\/blog\/bellows-sealed-valve\/\">bellows-sealed valves<\/a>.<\/p><\/section><section id=\"instalacion\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">M2F installation<\/h2><p class=\"wp-block-paragraph\">Recommended layout: bypass, shutoff valves, strainer, pressure gauges, and safety valve. With steam, the M2F <strong>does not need a water seal pot<\/strong>, and internal pressure sensing eliminates the control line. More detail in <a href=\"https:\/\/www.valfonta.com\/en\/blog\/how-to-install-pressure-reducing-valve\/\">how to install a pressure reducing valve<\/a> and in our guide to <a href=\"https:\/\/www.valfonta.com\/en\/blog\/steam-pressure-reducing-valve-2\/\">reducing valves for steam<\/a>.<\/p><div class=\"wp-block-group vf-diagram vf-s-7307c0 vf-t-figure is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-svgw is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><svg aria-label=\"Recommended installation diagram of a pressure reducing valve, with bypass\" role=\"img\" viewbox=\"0 0 900 230\"><path d=\"M20 120 H880\" fill=\"none\" stroke=\"#9aa0a6\" stroke-width=\"6\"><\/path><path d=\"M70 120 V40 H760 V120\" fill=\"none\" stroke=\"#9aa0a6\" stroke-dasharray=\"2 0\" stroke-width=\"4\"><\/path><path d=\"M865 120 l14 0 -10 -7 m10 7 -10 7\" fill=\"none\" stroke=\"#1e2123\" stroke-width=\"3\"><\/path><g><path d=\"M415 40 l-14 -10 v20 z M415 40 l14 -10 v20 z\" fill=\"#fff\" stroke=\"#1e2123\" stroke-width=\"2\"><\/path><line stroke=\"#1e2123\" stroke-width=\"2\" x1=\"415\" x2=\"415\" y1=\"40\" y2=\"22\"><\/line><rect fill=\"#1e2123\" height=\"4\" width=\"16\" x=\"407\" y=\"18\"><\/rect><circle cx=\"415\" cy=\"72\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"415\" y=\"76\">1b<\/text><\/g><g><path d=\"M130 120 l-14 -10 v20 z M130 120 l14 -10 v20 z\" fill=\"#fff\" stroke=\"#1e2123\" stroke-width=\"2\"><\/path><line stroke=\"#1e2123\" stroke-width=\"2\" x1=\"130\" x2=\"130\" y1=\"120\" y2=\"102\"><\/line><rect fill=\"#1e2123\" height=\"4\" width=\"16\" x=\"122\" y=\"98\"><\/rect><circle cx=\"130\" cy=\"152\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"130\" y=\"156\">1<\/text><\/g><g><rect fill=\"#fff\" height=\"36\" rx=\"4\" stroke=\"#1e2123\" stroke-width=\"2\" width=\"60\" x=\"195\" y=\"102\"><\/rect><circle cx=\"225\" cy=\"160\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"225\" y=\"164\">2<\/text><\/g><path d=\"M205 112 h40 M205 120 h40 M205 128 h40\" stroke=\"#1e2123\" stroke-width=\"1.5\"><\/path><g><line stroke=\"#1e2123\" stroke-width=\"2\" x1=\"300\" x2=\"300\" y1=\"116\" y2=\"90\"><\/line><circle cx=\"300\" cy=\"77\" fill=\"#fff\" r=\"13\" stroke=\"#1e2123\" stroke-width=\"2\"><\/circle><line stroke=\"#e6305d\" stroke-width=\"2\" x1=\"300\" x2=\"307\" y1=\"77\" y2=\"70\"><\/line><circle cx=\"324\" cy=\"64\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"324\" y=\"68\">3<\/text><\/g><g><rect fill=\"#fdecf1\" height=\"68\" rx=\"4\" stroke=\"#e6305d\" stroke-width=\"2\" width=\"110\" x=\"360\" y=\"86\"><\/rect><circle cx=\"415\" cy=\"176\" fill=\"#e6305d\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"415\" y=\"180\">4<\/text><\/g><path d=\"M392 120 h46 l-10 -8 m10 8 -10 8\" fill=\"none\" stroke=\"#e6305d\" stroke-width=\"2.5\"><\/path><g><rect fill=\"#fff\" height=\"34\" rx=\"4\" stroke=\"#1e2123\" stroke-width=\"2\" width=\"26\" x=\"610\" y=\"68\"><\/rect><circle cx=\"623\" cy=\"124\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"623\" y=\"128\">5<\/text><\/g><path d=\"M623 102 V117\" stroke=\"#1e2123\" stroke-width=\"2\"><\/path><g><line stroke=\"#1e2123\" stroke-width=\"2\" x1=\"690\" x2=\"690\" y1=\"116\" y2=\"90\"><\/line><circle cx=\"690\" cy=\"77\" fill=\"#fff\" r=\"13\" stroke=\"#1e2123\" stroke-width=\"2\"><\/circle><line stroke=\"#e6305d\" stroke-width=\"2\" x1=\"690\" x2=\"697\" y1=\"77\" y2=\"70\"><\/line><circle cx=\"714\" cy=\"64\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"714\" y=\"68\">6<\/text><\/g><g><path d=\"M800 120 l-14 -10 v20 z M800 120 l14 -10 v20 z\" fill=\"#fff\" stroke=\"#1e2123\" stroke-width=\"2\"><\/path><line stroke=\"#1e2123\" stroke-width=\"2\" x1=\"800\" x2=\"800\" y1=\"120\" y2=\"102\"><\/line><rect fill=\"#1e2123\" height=\"4\" width=\"16\" x=\"792\" y=\"98\"><\/rect><circle cx=\"800\" cy=\"152\" fill=\"#1e2123\" r=\"11\"><\/circle><text fill=\"#fff\" font-family=\"Montserrat,Arial\" font-size=\"12\" font-weight=\"700\" text-anchor=\"middle\" x=\"800\" y=\"156\">1a<\/text><\/g><\/svg><\/p><\/div><div class=\"wp-block-group vf-t-figcaption is-layout-flow wp-block-group-is-layout-flow\"><ol class=\"wp-block-list\"><li>Shutoff valves (1, 1a) and bypass valve (1b)<\/li><li>Strainer<\/li><li>Inlet pressure gauge<\/li><li>M2F reducing valve<\/li><li>Safety valve<\/li><li>Outlet pressure gauge<\/li><\/ol><\/div><\/div><h3 class=\"wp-block-heading\">Installation and start-up<\/h3><ol class=\"vf-steps wp-block-list\"><li><b>Clean the pipe<\/b> and install a strainer at the inlet, with room to remove and clean it.<\/li><li><b>Install the valve in a horizontal pipe<\/b>, with the flow in the direction of the arrow on the body.<\/li><li><b>Support the pipe<\/b> close to the flanges, never the valve or the actuator.<\/li><li><b>If you ordered external pressure sensing<\/b>, connect it with 10 \u00d7 1 mm tubing in the reduced-pressure zone, at least 1 m from the outlet, or to the manifold if there is one. If the valve oscillates, add a needle valve.<\/li><li><b>Do not install a condensate pot:<\/b> the bellows works with steam up to 200 \u00b0C connected directly.<\/li><li><b>Connect the bypass<\/b> beyond the pressure sensing point and open the shutoff valves slowly to avoid water hammer.<\/li><li><b>Adjust the outlet pressure<\/b> with the adjusting screw: compressing the spring (clockwise) raises it; releasing it (counterclockwise) lowers it.<\/li><\/ol><p class=\"wp-block-paragraph\">Installation must be carried out by specialized personnel. In ATEX zones, ensure electrical conductivity between the valve and the installation. If the pressure is unstable, review the <a href=\"https:\/\/www.valfonta.com\/en\/blog\/pressure-reducing-valve-problems\/\">most common problems with reducing valves<\/a>.<\/p><\/section><section id=\"documentacion\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">M2F technical documentation<\/h2><div class=\"wp-block-group vf-docs is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-doc vf-amb-enllac is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><i>PDF<\/i><\/p><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>M2F datasheet (in English)<\/b><span>PDF \u00b7 4 pages \u00b7 features, exploded view, dimensions, and installation<\/span><\/p><\/div><p class=\"vf-enllac wp-block-paragraph\"><a class=\"vf-enllac-estirat\" href=\"\/wp-content\/uploads\/2026\/10\/M2F-16A-ENG.pdf\" aria-label=\"PDF M2F datasheet (in English) PDF \u00b7 4 pages \u00b7 features, exploded view, dimensions, and installation\" rel=\"noopener\" target=\"_blank\"><\/a><\/p><\/div><div class=\"wp-block-group vf-doc vf-amb-enllac is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><i>PDF<\/i><\/p><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>Operation and installation manual<\/b><span>PDF \u00b7 12 pages \u00b7 installation, dimensions, disassembly, and ATEX<\/span><\/p><\/div><p class=\"vf-enllac wp-block-paragraph\"><a class=\"vf-enllac-estirat\" href=\"\/wp-content\/uploads\/2026\/10\/Manual-M2F-16A-ESP.pdf\" aria-label=\"PDF Operation and installation manual PDF \u00b7 12 pages \u00b7 installation, dimensions, disassembly, and ATEX\" rel=\"noopener\" target=\"_blank\"><\/a><\/p><\/div><\/div><p class=\"wp-block-paragraph\">Order and ATEX documentation: see our <a href=\"https:\/\/www.valfonta.com\/en\/certificates\/\">quality certificates<\/a>.<\/p><\/section><section id=\"comparar\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">M2F vs. other Valfonta reducing valves<\/h2><p class=\"wp-block-paragraph\">Check whether the M2F is the right model or whether another reducing valve in the range suits you better.<\/p><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\">Model<\/th><th scope=\"col\">DN<\/th><th scope=\"col\">PN<\/th><th scope=\"col\">Max. inlet (barg)<\/th><th scope=\"col\">Outlet (barg)<\/th><th scope=\"col\">Max. T (\u00b0C)<\/th><th scope=\"col\">Steam<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv30\/\">PRV30<\/a><\/th><td>15 \u2013 25<\/td><td>25<\/td><td>25<\/td><td>0,5 \u2013 12<\/td><td>80 (125\u2013150)<\/td><td>No<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv20\/\">PRV20<\/a><\/th><td>8 \u2013 20<\/td><td>40<\/td><td>40<\/td><td>0,2 \u2013 20<\/td><td>150<\/td><td>No<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv44\/\">PRV44<\/a><\/th><td>15 \u2013 25<\/td><td>25<\/td><td>25<\/td><td>0,5 \u2013 12<\/td><td>210<\/td><td>Yes<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv45\/\">PRV45<\/a><\/th><td>15 \u2013 25<\/td><td>25<\/td><td>16<\/td><td>0,01 \u2013 8<\/td><td>150<\/td><td>Yes<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-vd\/\">VD<\/a><\/th><td>15 \u2013 100<\/td><td>40<\/td><td>40<\/td><td>1,5 \u2013 16<\/td><td>200<\/td><td>Yes<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valves-m1\/\">M1<\/a><\/th><td>15 \u2013 150<\/td><td>40<\/td><td>40<\/td><td>0,1 \u2013 15<\/td><td>220<\/td><td>Yes<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-m2\/\">M2<\/a><\/th><td>15 \u2013 100<\/td><td>40<\/td><td>40<\/td><td>0,02 \u2013 10<\/td><td>180<\/td><td>Yes<\/td><\/tr><tr><th scope=\"row\"><span class=\"vf-dato vf-dato-fila\" hidden data-vf-class=\"vf-cur\"><\/span>M2F<\/th><td>15 \u2013 50<\/td><td>25 \u2013 40<\/td><td>25<\/td><td>1 \u2013 10<\/td><td>200<\/td><td>Yes<\/td><\/tr><\/tbody><\/table><\/figure><\/div><p class=\"vf-note wp-block-paragraph\">Temperature in parentheses: with EPDM or Viton gaskets. Data from the Valfonta general reducing valve catalog (2025); the M2F is not listed in it, and its data come from its datasheet.<\/p><\/section><section id=\"preguntas\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Frequently asked questions about the M2F<\/h2><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Does the M2F need a condensate pot?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">No. Thanks to its stainless steel bellows, it works with steam up to 200 \u00b0C connected directly, with no water seal pot.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What is the difference between the M2F and the M2?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-m2\/\">M2<\/a> uses a diaphragm: it goes up to DN100, regulates from 0.02 barg, accepts 40 barg inlet pressure up to DN50, and, with steam, needs a water seal pot (up to 180 \u00b0C). The M2F uses a bellows: from DN15 to DN50, 25 barg inlet pressure, outlet pressure from 1 to 10 barg, and steam up to 200 \u00b0C with no water seal pot.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What outlet pressure can be set?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">There are two standard ranges, 1 to 4 barg and 3 to 10 barg; other ranges on request. See <a href=\"https:\/\/www.valfonta.com\/en\/blog\/how-it-regulate-a-pressure-reducing-valve\/\">how to adjust a reducing valve<\/a>.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What temperature does it withstand?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Up to 200 \u00b0C with steam, 150 \u00b0C with air and nitrogen, and 80 \u00b0C with other gases, with a graphite-filled PTFE or PEEK plug. With an EPDM or FKM plug, the limit is 150 \u00b0C, and with NBR, 80 \u00b0C.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What spare parts does the manufacturer recommend?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">The gasket (5), the nut (6), the bellows (19), the compensation gasket (26), and the seat (28). Maintenance is carried out with the valve installed, depressurized, and isolated.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Can it be installed in an ATEX zone?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Yes. It carries ATEX II 2 GD marking (certificate LOM 14.034 U) for zones 1, 2, 21, and 22, depending on the temperature class of the fluid. More in <a href=\"https:\/\/www.valfonta.com\/en\/blog\/atex-valves\/\">ATEX valves<\/a>.<\/p><\/div><\/details><\/section><section id=\"relacionados\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Other pressure reducing valve models<\/h2><ul class=\"vf-rel wp-block-list\"><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-m2\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-M2-PROVISIONAL-700x700-1.jpg\" alt=\"M2 diaphragm reducing valve\" class=\"wp-image-193\" width=\"300\" height=\"300\" loading=\"lazy\"><b>M2 diaphragm reducing valve<\/b><span>DN15\u2013100 and outlet pressures from 0.02 barg.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valves-m1\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valvula-reductora-presion-m1-perspectiva-400.webp\" alt=\"M1 reducing valve\" class=\"wp-image-201\" width=\"300\" height=\"300\" loading=\"lazy\"><b>M1 reducing valve<\/b><span>Up to DN150 and steam at 220 \u00b0C.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv44\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44.jpg\" alt=\"PRV44 reducing valve\" class=\"wp-image-207\" width=\"300\" height=\"300\" loading=\"lazy\"><b>PRV44 reducing valve<\/b><span>DN15\u201325, steam up to 210 \u00b0C.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv45\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV45-55-700x700-1.jpg\" alt=\"PRV45 reducing valve\" class=\"wp-image-191\" width=\"300\" height=\"300\" loading=\"lazy\"><b>PRV45 reducing valve<\/b><span>Outlet pressures from 0.01 barg; suitable for steam.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-vd\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valvula-reductora-presion-vd-perspectiva-400.webp\" alt=\"VD reducing valve\" class=\"wp-image-10116\" width=\"300\" height=\"300\" loading=\"lazy\"><b>VD reducing valve<\/b><span>DN15\u2013100, 40 bar, and steam up to 200 \u00b0C.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv30\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valvula-reductora-presion-prv30-frontal-400.webp\" alt=\"PRV30 reducing valve\" class=\"wp-image-199\" width=\"300\" height=\"300\" loading=\"lazy\"><b>PRV30 reducing valve<\/b><span>316L stainless, DN15\u201325.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv20\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV20-FOTO.jpg\" alt=\"PRV20 reducing valve\" class=\"wp-image-215\" width=\"300\" height=\"300\" loading=\"lazy\"><b>PRV20 reducing valve<\/b><span>316L stainless, DN8\u201320 and 40 bar.<\/span><\/a><\/li><\/ul><\/section><section id=\"solicitar\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-quote is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Request a quote for the M2F<\/h2><p class=\"wp-block-paragraph\">Give us your installation details and we will recommend the right size, spring range, and plug.<\/p><ul class=\"wp-block-list\"><li>Fluid and operating temperature<\/li><li>Inlet pressure and desired outlet pressure<\/li><li>Maximum and minimum flow rate<\/li><li>Size, connection, and body material<\/li><\/ul><p class=\"vf-pdp-contact wp-block-paragraph\">You can also call <a href=\"tel:+34933720888\">933 720 888<\/a>.<\/p><\/div>\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f565-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"565\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/en\/wp-json\/wp\/v2\/product\/666#wpcf7-f565-o1\" method=\"post\" class=\"wpcf7-form init vf-form wpcf7-acceptance-as-validation\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\" toolname=\"solicitar_oferta\" tooldescription=\"Request a quote from Valfonta for the models on this page (model, size, fluid and pressures); a member of the team will reply.\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"565\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.2.3\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f565-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_vf_t\" value=\"1792698950.c0ba13ae03c93cb0\" \/>\n<\/fieldset>\n<input class=\"wpcf7-form-control wpcf7-hidden\" value=\"M2F\" type=\"hidden\" name=\"modelo\" \/><label>Name *<span class=\"wpcf7-form-control-wrap\" data-name=\"nombre\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" autocomplete=\"name\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"nombre\" \/><\/span><\/label><label>Company<span class=\"wpcf7-form-control-wrap\" data-name=\"empresa\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" autocomplete=\"organization\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"empresa\" \/><\/span><\/label><label>Email *<span class=\"wpcf7-form-control-wrap\" data-name=\"email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" autocomplete=\"email\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"email\" name=\"email\" \/><\/span><\/label><label>Phone<span class=\"wpcf7-form-control-wrap\" data-name=\"telefono\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-text wpcf7-validates-as-tel\" autocomplete=\"tel\" aria-invalid=\"false\" value=\"\" type=\"tel\" name=\"telefono\" \/><\/span><\/label><fieldset><legend>Application data (optional)<\/legend><label>Size<span class=\"wpcf7-form-control-wrap\" data-name=\"dn\"><select class=\"wpcf7-form-control wpcf7-select\" aria-invalid=\"false\" name=\"dn\"><option value=\"\">Select<\/option><option value=\"DN15 (\u00bd\u2033)\">DN15 (\u00bd\u2033)<\/option><option value=\"DN20 (\u00be\u2033)\">DN20 (\u00be\u2033)<\/option><option value=\"DN25 (1\u2033)\">DN25 (1\u2033)<\/option><option value=\"DN32\">DN32<\/option><option value=\"DN40\">DN40<\/option><option value=\"DN50\">DN50<\/option><option value=\"I don&#039;t know\">I don&#039;t know<\/option><\/select><\/span><\/label><label>Fluid<span class=\"wpcf7-form-control-wrap\" data-name=\"fluido\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"steam, compressed air, nitrogen\u2026\" value=\"\" type=\"text\" name=\"fluido\" \/><\/span><\/label><label>Inlet pressure (barg)<span class=\"wpcf7-form-control-wrap\" data-name=\"p_entrada\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"p_entrada\" \/><\/span><\/label><label>Required outlet pressure (barg)<span class=\"wpcf7-form-control-wrap\" data-name=\"p_salida\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"p_salida\" \/><\/span><\/label><label>Flow rate<span class=\"wpcf7-form-control-wrap\" data-name=\"caudal\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"e.g. 2 m\u00b3\/h\" value=\"\" type=\"text\" name=\"caudal\" \/><\/span><\/label><label>Temperature (\u00b0C)<span class=\"wpcf7-form-control-wrap\" data-name=\"temperatura\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"temperatura\" \/><\/span><\/label><\/fieldset><label class=\"vf-full\">Message<span class=\"wpcf7-form-control-wrap\" data-name=\"mensaje\"><textarea cols=\"40\" rows=\"4\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" name=\"mensaje\"><\/textarea><\/span><\/label><label class=\"vf-chk vf-full\"><span class=\"wpcf7-form-control-wrap\" data-name=\"privacidad\"><span class=\"wpcf7-form-control wpcf7-acceptance\"><span class=\"wpcf7-list-item\"><input type=\"checkbox\" name=\"privacidad\" value=\"1\" aria-invalid=\"false\" \/><\/span><\/span><\/span> <span>I have read and accept the <a href=\"\/en\/privacy-policy\/\">privacy policy<\/a> *<\/span><\/label><input class=\"wpcf7-form-control wpcf7-submit has-spinner vf-btn vf-btn--pri\" type=\"submit\" value=\"Send request\" \/><span class=\"vf-hp\" aria-hidden=\"true\"><label>Web <input type=\"text\" name=\"vf_web\" value=\"\" tabindex=\"-1\" autocomplete=\"off\" toolparamdescription=\"Campo de control: d\u00e9jalo vac\u00edo\"><\/label><\/span><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n<\/div><\/section><div class=\"wp-block-group vf-pdp-bar is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--sec\" href=\"tel:+34933720888\">Call<\/a><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Request a quote<\/a><\/p><\/div><\/article><\/div>","protected":false},"excerpt":{"rendered":"<p>Home\u203aPressure reducing valves\u203aM2F bellows pressure reducing valve Pressure reducing valve \u00b7 Bellows-balanced M2F bellows pressure reducing valve No water seal pot Self-operated reducing valve balanced by an AISI 316Ti stainless steel bellows, which maintains the outlet pressure even when the inlet pressure fluctuates. It works with steam up to 200 \u00b0C without a condensate pot, ... <a title=\"M2F bellows pressure reducing valve\" class=\"read-more\" href=\"https:\/\/www.valfonta.com\/en\/product\/bellow-pressure-reducing-valve\/\" aria-label=\"Read more about M2F bellows pressure reducing valve\">Read more<\/a><\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false,"_generate-full-width-content":"true","_generate-disable-headline":"true","rank_math_title":"M2F bellows pressure reducing valve | Valfonta","rank_math_description":"M2F pressure reducing valve balanced by a 316Ti stainless bellows: steam up to 200 \u00b0C with no condensate pot. DN15 to DN50, inlet up to 25 barg.","rank_math_focus_keyword":"","vf_jsonld":"[{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.valfonta.com\/#organization\",\"name\":\"Valfonta\",\"legalName\":\"Val Fonta, S.L.\",\"taxID\":\"B59935718\",\"url\":\"https:\/\/www.valfonta.com\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valfonta-logo.webp\"},\"foundingDate\":\"1962\",\"email\":\"valfonta@valfonta.com\",\"telephone\":\"+34 933 720 888\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"C\/ Bronze 26, Pol. Ind. Les Guixeres\",\"postalCode\":\"08915\",\"addressLocality\":\"Badalona\",\"addressRegion\":\"Barcelona\",\"addressCountry\":\"ES\"},\"description\":\"Design, manufacture, and sale of pressure reducing valves, pressure relief valves, and control valves.\"},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.valfonta.com\/#website\",\"url\":\"https:\/\/www.valfonta.com\/en\/\",\"name\":\"Valfonta\",\"publisher\":{\"@id\":\"https:\/\/www.valfonta.com\/#organization\"},\"inLanguage\":\"en\"},{\"@type\":\"ItemPage\",\"@id\":\"https:\/\/www.valfonta.com\/en\/product\/bellow-pressure-reducing-valve\/#webpage\",\"url\":\"https:\/\/www.valfonta.com\/en\/product\/bellow-pressure-reducing-valve\/\",\"name\":\"M2F bellows pressure reducing valve | Valfonta\",\"description\":\"M2F pressure reducing valve balanced by a 316Ti stainless bellows: steam up to 200 \u00b0C with no condensate pot. 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The M2F uses a bellows: from DN15 to DN50, 25 barg inlet pressure, outlet pressure from 1 to 10 barg, and steam up to 200 \u00b0C with no water seal pot.\"}},{\"@type\":\"Question\",\"name\":\"What outlet pressure can be set?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"There are two standard ranges, 1 to 4 barg and 3 to 10 barg; other ranges on request. See how to adjust a reducing valve.\"}},{\"@type\":\"Question\",\"name\":\"What temperature does it withstand?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Up to 200 \u00b0C with steam, 150 \u00b0C with air and nitrogen, and 80 \u00b0C with other gases, with a graphite-filled PTFE or PEEK plug. With an EPDM or FKM plug, the limit is 150 \u00b0C, and with NBR, 80 \u00b0C.\"}},{\"@type\":\"Question\",\"name\":\"What spare parts does the manufacturer recommend?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The gasket (5), the nut (6), the bellows (19), the compensation gasket (26), and the seat (28). Maintenance is carried out with the valve installed, depressurized, and isolated.\"}},{\"@type\":\"Question\",\"name\":\"Can it be installed in an ATEX zone?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It carries ATEX II 2 GD marking (certificate LOM 14.034 U) for zones 1, 2, 21, and 22, depending on the temperature class of the fluid. 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