{"id":618,"date":"2026-10-02T13:11:07","date_gmt":"2026-10-02T11:11:07","guid":{"rendered":"https:\/\/www.valfonta.com\/control-valve-design\/"},"modified":"2026-10-15T12:08:05","modified_gmt":"2026-10-15T10:08:05","slug":"control-valve-design","status":"publish","type":"page","link":"https:\/\/www.valfonta.com\/en\/control-valve-design\/","title":{"rendered":"Custom valve design"},"content":{"rendered":"<div class=\"wp-block-group vf-raiz vf-pl-hub is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-cat-wrap is-layout-flow wp-block-group-is-layout-flow\"><article class=\"wp-block-group vf-pdp vf-cat vf-c2 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 class=\"vf-sep\">\u203a<\/span><span aria-current=\"page\">Valve design<\/span><\/p><\/nav><div class=\"wp-block-group vf-cat-hero vf-c2-hero is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-pdp-eyebrow wp-block-paragraph\">Designed and manufactured in Badalona since 1962<\/p><h1 class=\"wp-block-heading\">Custom valve design<\/h1><p class=\"vf-lead wp-block-paragraph\">If you cannot find the valve you need in our catalog, we study your application and adapt an existing valve or design a custom one, for steam, liquids, or gases. We start from our reducing, relief, and control valves and change whatever your process requires.<\/p><ul class=\"vf-pdp-keys wp-block-list\"><li><span>Fluids<\/span><b>Steam, liquids, and gases<\/b><\/li><li><span>Materials<\/span><b>316L stainless, CF3M, WCB, bronze <small>duplex and super duplex on request<\/small><\/b><\/li><li><span>Connections<\/span><b>EN and ANSI flanges, threaded <small>clamp and weld ends on request<\/small><\/b><\/li><li><span>Standards<\/span><b>PED \u00b7 ATEX \u00b7 ISO 9001<\/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\">Tell us about your case<\/a><a class=\"vf-btn vf-btn--sec\" href=\"#diferencias\">What we can adapt<\/a><\/p><\/div><p class=\"vf-pdp-contact wp-block-paragraph\">Do you have a special application? Call <a href=\"tel:+34933720888\">933 720 888<\/a> or email <a href=\"mailto:valfonta@valfonta.com\">valfonta@valfonta.com<\/a>.<\/p><\/div><div class=\"wp-block-group vf-c2-finder vf-c2-steps is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-fh wp-block-paragraph\">How we work<\/p><ol class=\"wp-block-list\"><li><b>You tell us about your application.<\/b> Fluid, function, pressures, flow rate, connection, and regulatory requirements.<\/li><li><b>We study your case.<\/b> We look for the catalog model that fits or the on-request options you need.<\/li><li><b>We propose a solution.<\/b> A standard model, one with on-request options, or a purpose-built design.<\/li><li><b>We manufacture and test.<\/b> In our Badalona workshop, with a serial number for spare parts and certificates.<\/li><\/ol><div class=\"wp-block-group vf-fbar 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\">Tell us about your case<\/a><\/p><\/div><\/div><\/div><ul class=\"vf-pdp-trust wp-block-list\"><li>In-house design and manufacturing in Badalona<\/li><li>ISO 9001:2015 quality system<\/li><li>PED quality system to Module D1<\/li><li>ATEX certificate for custody of the technical file<\/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=\"#modelos\">Families<\/a><\/li><li><a href=\"#como-funciona\">What we design<\/a><\/li><li><a href=\"#diferencias\">What we can adapt<\/a><\/li><li><a href=\"#preguntas\">FAQ<\/a><\/li><li><a href=\"#solicitar\">Tell us about your case<\/a><\/li><\/ul><\/nav><section id=\"modelos\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Starting families<\/h2><p class=\"vf-c2-intro wp-block-paragraph\">Almost every custom design starts from one of our families. Each datasheet shows which options are available on request.<\/p><div class=\"wp-block-group vf-c2-cards vf-c2-fams vf-t-ul is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-c2-card vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-img is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-image vf-img-suelta\"><a href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\" alt=\"Pressure reducing valves\" class=\"wp-image-181\" width=\"160\" height=\"160\" loading=\"lazy\"><\/a><\/figure><\/div><div class=\"wp-block-group vf-body is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-tag wp-block-paragraph\">8 models<\/p><h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\">Pressure reducing valves<\/a><\/h3><p class=\"vf-sub wp-block-paragraph\">They keep downstream pressure constant with no auxiliary power.<\/p><div class=\"wp-block-group vf-t-dl is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Sizes<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">DN8 to DN150<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Inlet<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">up to 40 barg<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">On request<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">duplex, super duplex, weld ends<\/p><\/div><\/div><div class=\"wp-block-group vf-act is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--sec\" href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\">View range<\/a><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Inquire<\/a><\/p><\/div><\/div><\/div><div class=\"wp-block-group vf-c2-card vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-img is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-image vf-img-suelta\"><a href=\"https:\/\/www.valfonta.com\/en\/pressure-relief-valve\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valvula-alivio-presion-s3-s4-perspectiva-400.webp\" alt=\"Pressure relief and excess pressure\" class=\"wp-image-10230\" width=\"160\" height=\"160\" loading=\"lazy\"><\/a><\/figure><\/div><div class=\"wp-block-group vf-body is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-tag wp-block-paragraph\">6 models<\/p><h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.valfonta.com\/en\/pressure-relief-valve\/\">Pressure relief and excess pressure<\/a><\/h3><p class=\"vf-sub wp-block-paragraph\">They discharge excess pressure from a line or a piece of equipment.<\/p><div class=\"wp-block-group vf-t-dl is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Sizes<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">DN15 to DN150<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Set pressure<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">0.01 to 20 barg<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">On request<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">bronze, duplex, super duplex<\/p><\/div><\/div><div class=\"wp-block-group vf-act is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--sec\" href=\"https:\/\/www.valfonta.com\/en\/pressure-relief-valve\/\">View range<\/a><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Inquire<\/a><\/p><\/div><\/div><\/div><div class=\"wp-block-group vf-c2-card vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-img is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-image vf-img-suelta\"><a href=\"https:\/\/www.valfonta.com\/en\/control-valve\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-C1-PROVISIONAL-700x700-1.jpg\" alt=\"Control valves\" class=\"wp-image-183\" width=\"160\" height=\"160\" loading=\"lazy\"><\/a><\/figure><\/div><div class=\"wp-block-group vf-body is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-tag wp-block-paragraph\">Pneumatic actuator<\/p><h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.valfonta.com\/en\/control-valve\/\">Control valves<\/a><\/h3><p class=\"vf-sub wp-block-paragraph\">The C1 provides modulating or ON\/OFF control according to the process signal.<\/p><div class=\"wp-block-group vf-t-dl is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Sizes<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">DN15 to DN100<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Kv<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">3.5 to 130 m\u00b3\/h<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">On request<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">DN125, DN150, reduced Kv<\/p><\/div><\/div><div class=\"wp-block-group vf-act is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--sec\" href=\"https:\/\/www.valfonta.com\/en\/control-valve\/\">View range<\/a><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Inquire<\/a><\/p><\/div><\/div><\/div><div class=\"wp-block-group vf-c2-card vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-img is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-image vf-img-suelta\"><a href=\"https:\/\/www.valfonta.com\/en\/safety-valves\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/alper-1-700x700-1.jpg\" alt=\"Safety valves\" class=\"wp-image-184\" width=\"160\" height=\"160\" loading=\"lazy\"><\/a><\/figure><\/div><div class=\"wp-block-group vf-body is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-tag wp-block-paragraph\">Custom set pressure<\/p><h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.valfonta.com\/en\/safety-valves\/\">Safety valves<\/a><\/h3><p class=\"vf-sub wp-block-paragraph\">Supplied preset to the pressure you specify.<\/p><div class=\"wp-block-group vf-t-dl is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Models<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">ALPER, JAS, and 368\u2013371<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Sizes<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">\u00bc\u2033 to 4\u2033<\/p><\/div><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-t-dt vf-p0 wp-block-paragraph\">Temperature<\/p><p class=\"vf-t-dd vf-p0 wp-block-paragraph\">up to 280 \u00b0C<\/p><\/div><\/div><div class=\"wp-block-group vf-act is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--sec\" href=\"https:\/\/www.valfonta.com\/en\/safety-valves\/\">View range<\/a><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Inquire<\/a><\/p><\/div><\/div><\/div><\/div><\/section><section id=\"como-funciona\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">What we design and the data we need<\/h2><div class=\"wp-block-group vf-c2-how vf-solo is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-txt is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Valfonta has designed and manufactured pressure control valves in Badalona since 1962. Beyond the standard catalog, we adapt and design custom valves for steam, liquids, or gases to meet each customer\u2019s requirements: <a href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\">pressure reducing valves<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/pressure-relief-valve\/\">pressure relief valves<\/a>, and other <a href=\"https:\/\/www.valfonta.com\/en\/control-valve\/\">control valves<\/a>.<\/p><p class=\"wp-block-paragraph\">Many adaptations are already listed in the datasheets as <strong>on-request<\/strong> options: a different body material, connection, or gaskets, a reduced Kv, or a different pressure range. If your case goes further, we study your needs until we find the right valve for your installation. On our blog we explain what <a href=\"https:\/\/www.valfonta.com\/en\/blog\/custom-valves\/\">custom valves<\/a> are and cover the <a href=\"https:\/\/www.valfonta.com\/en\/blog\/how-to-design-a-pressure-valve\/\">basics of designing a pressure valve<\/a>.<\/p><h3 class=\"wp-block-heading\">The data we need from you<\/h3><p class=\"wp-block-paragraph\">To study your case, the more complete the initial information, the better. This is what we will ask you for:<\/p><ol class=\"wp-block-list\"><li><b>The fluid.<\/b> Steam, liquid, or gas, its minimum and maximum temperature, and any special features: for example, whether it is oxygen or a mineral oil.<\/li><li><b>The function.<\/b> Reducing pressure, discharging excess pressure, or regulating from a control system. In the latter case, the signal type and the fail-safe position (normally closed or normally open).<\/li><li><b>The pressures.<\/b> The maximum and operating inlet pressure, and the outlet pressure or set pressure you need.<\/li><li><b>The flow rate.<\/b> The maximum and minimum flow rates, or the Kv if you have already calculated it.<\/li><li><b>The installation.<\/b> The pipe size, the connection type, and the material required by your process or your internal standards.<\/li><li><b>The requirements.<\/b> If the valve will be installed in an ATEX zone or needs CE marking under the Pressure Equipment Directive, tell us from the start.<\/li><\/ol><p class=\"wp-block-paragraph\">With that data, we will propose a catalog model, a model with on-request options, or a purpose-built design.<\/p><\/div><\/div><\/section><section id=\"diferencias\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">What we can adapt<\/h2><p class=\"wp-block-paragraph\">These are the on-request options already listed in our datasheets and catalogs, with the models they apply to.<\/p><div class=\"wp-block-group vf-c2-dif vf-c2-adapt vf-t-ul is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Body material<\/h3><p class=\"wp-block-paragraph\">Duplex or super duplex in the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv20\/\">PRV20<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv30\/\">PRV30<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv44\/\">PRV44<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv45\/\">PRV45<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-vd\/\">VD<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valves-m1\/\">M1<\/a>, and <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-m2\/\">M2<\/a> reducing valves and in the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-excess-valve-prv53\/\">PRV53<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-excess-valve-prv54\/\">PRV54<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/excess-pressure-valve-model-prv55\/\">PRV55<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-excess-valve-s1\/\">S1<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-excess-valve-s2\/\">S2<\/a>, and <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-relief-valve-s3\/\">S3<\/a> excess pressure valves. RG10 bronze body on the excess pressure and relief valves. Monel or bronze internals on the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valves-m1\/\">M1<\/a> and bronze on the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-vd\/\">VD<\/a>. The <a href=\"https:\/\/www.valfonta.com\/en\/product\/c1-gas-control-valve\/\">C1<\/a> in stainless steel construction.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Connections<\/h3><p class=\"wp-block-paragraph\">Weld ends (socket weld or butt weld) across the entire range of reducing and excess pressure valves and on the <a href=\"https:\/\/www.valfonta.com\/en\/product\/c1-gas-control-valve\/\">C1<\/a>. Clamp connection on the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv30\/\">PRV30<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv44\/\">PRV44<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-reducing-valve-prv45\/\">PRV45<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-excess-valve-prv53\/\">PRV53<\/a>, <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-excess-valve-prv54\/\">PRV54<\/a>, and <a href=\"https:\/\/www.valfonta.com\/en\/product\/excess-pressure-valve-model-prv55\/\">PRV55<\/a>. BSP or NPT thread on the C1.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Gaskets, plugs, and diaphragms<\/h3><p class=\"wp-block-paragraph\">EPDM, PEEK, Viton, or Aflas gaskets on the PRV30 and PRV44, and NBR or FKM for mineral oils on the PRV54. PEEK, EPDM, FKM, or NBR plug on the <a href=\"https:\/\/www.valfonta.com\/en\/product\/bellow-pressure-reducing-valve\/\">M2F<\/a> and the <a href=\"https:\/\/www.valfonta.com\/en\/product\/pressure-relief-valve-s3\/\">S3<\/a>, and stellited on the C1. PTFE diaphragm on the M2 and S2.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Kv and port<\/h3><p class=\"wp-block-paragraph\">Reduced or special Kv on the PRV20, PRV30, PRV44, PRV45, PRV53, PRV54, PRV55, M1, M2, S1, and S2. On the C1, Kv from 0.1 m\u00b3\/h and reduced port; on the S3, reduced port.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Pressure and temperature ranges<\/h3><p class=\"wp-block-paragraph\">Special outlet ranges on the M2F, set pressure from 5 to 15 barg on the PRV53, and a 350 mm actuator, on request, on the PRV45 (millibar ranges) and the PRV55. On the C1, finned bonnet and graphite packing up to 350 \u00b0C, or extended bonnet below \u22125 \u00b0C; on the S3, up to 250 \u00b0C with special gaskets.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Special services and accessories<\/h3><p class=\"wp-block-paragraph\">Degreasing for oxygen service on the PRV30, PRV44, PRV53, and PRV54 (the PRV55 is always supplied degreased). Stainless steel actuator on the M2, S2, and PRV55. On the C1, anti-cavitation and low-noise cage, 4\u201320 mA positioner, and handwheel.<\/p><\/div><\/div><p class=\"wp-block-paragraph\">If the adaptation you need is not listed here, tell us about your case anyway: we will study it with you.<\/p><\/section><section id=\"normativa\" class=\"wp-block-group vf-c2-norm is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Standards and certificates<\/h2><div class=\"wp-block-group vf-norm vf-t-ul is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>PED 2014\/68\/EU<\/b><\/p><p class=\"wp-block-paragraph\">Quality system certified to Module D1. Depending on size, pressure, and fluid, each valve may or may not carry CE marking.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>ATEX<\/b><\/p><p class=\"wp-block-paragraph\">Custody of the technical file for reducing valves and for excess pressure, relief, and pneumatic control valves. Many datasheets include II 2 GD marking.<\/p><\/div><div class=\"wp-block-group vf-t-li is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>ISO 9001:2015<\/b><\/p><p class=\"wp-block-paragraph\">Design, manufacture, and sale of globe control valves for process control.<\/p><\/div><\/div><p class=\"wp-block-paragraph\">View and download <a href=\"https:\/\/www.valfonta.com\/en\/certificates\/\">Valfonta\u2019s certificates<\/a>.<\/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 valve design<\/h2><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What is a custom valve?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">It is a valve adapted to a specific application when the standard model does not fit: with a different material, connection, gaskets, Kv, or pressure range, or designed specifically for your process.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What fluids can custom valves handle?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Steam, liquids, and gases. For oxygen, several models are supplied degreased on request, and specific gaskets are available for mineral oils.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Do you make valves in super duplex?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Yes. Duplex and super duplex are offered on request in the PRV20, PRV30, PRV44, PRV45, VD, M1, and M2 reducing valves and in the PRV53, PRV54, PRV55, S1, S2, and S3 excess pressure valves.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What special connections can be ordered?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Weld ends (socket weld or butt weld) on reducing valves, excess pressure valves, and the C1, and clamp connection on several small-size stainless steel models (PRV30, PRV44, PRV45, PRV53, PRV54, and PRV55).<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Do custom valves comply with PED and ATEX?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Valfonta\u2019s quality system is certified to Module D1 of Directive 2014\/68\/EU, and CE marking depends on size, pressure, and fluid. If the valve will be installed in an ATEX zone, tell us when you order it. See our <a href=\"https:\/\/www.valfonta.com\/en\/certificates\/\">certificates<\/a>.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What data do you need to study my case?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">The fluid and its temperature, the valve\u2019s function, the inlet and outlet pressures or set pressure, the maximum and minimum flow rate, the connection and material, and the regulatory requirements. The more complete they are, the sooner we can propose a solution.<\/p><\/div><\/details><\/section><section id=\"guias\" class=\"wp-block-group vf-c2-more 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\">Related technical guides<\/h2><ul class=\"vf-arts wp-block-list\"><li><a href=\"https:\/\/www.valfonta.com\/en\/blog\/custom-valves\/\">Custom valves for industrial systems<\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/blog\/how-to-design-a-pressure-valve\/\">How to design a pressure valve<\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/blog\/selection-of-control-valves\/\">Control valve selection<\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/blog\/self-operated-valve-vs-actuated-valve\/\">Self-operated vs. actuated valve<\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/en\/blog\/atex-valves\/\">ATEX valves: types and regulations<\/a><\/li><\/ul><\/div><p class=\"vf-fams wp-block-paragraph\"><b>Other families:<\/b> <a href=\"https:\/\/www.valfonta.com\/en\/pressure-reducing-valves\/\">Pressure reducing valves<\/a> \u00b7 <a href=\"https:\/\/www.valfonta.com\/en\/pressure-relief-valve\/\">Pressure relief valves<\/a> \u00b7 <a href=\"https:\/\/www.valfonta.com\/en\/control-valve\/\">Control valves<\/a> \u00b7 <a href=\"https:\/\/www.valfonta.com\/en\/safety-valves\/\">Safety valves<\/a> \u00b7 <a href=\"https:\/\/www.valfonta.com\/en\/liquid-steam-ejectors\/\">Ejectors<\/a> \u00b7 <a href=\"https:\/\/www.valfonta.com\/en\/liquids-steam-injector\/\">Injectors<\/a><\/p><\/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\">Tell us which valve you need<\/h2><p class=\"wp-block-paragraph\">Describe your application and we will propose a catalog model, the on-request options you need, or a purpose-built design.<\/p><ul class=\"wp-block-list\"><li>Fluid and operating temperature<\/li><li>Valve function and inlet and outlet pressures or set pressure<\/li><li>Maximum and minimum flow rate (or Kv)<\/li><li>Connection, material, and regulatory requirements (PED, ATEX)<\/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-f538-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"538\">\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\/pages\/618#wpcf7-f538-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=\"538\" \/><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-f538-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=\"1792703060.78b6f4ef75295f56\" \/>\n<\/fieldset>\n<input class=\"wpcf7-form-control wpcf7-hidden\" value=\"Dise\u00f1o de v\u00e1lvulas\" type=\"hidden\" name=\"familia\" \/><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><label class=\"vf-full\">Valve type<span class=\"wpcf7-form-control-wrap\" data-name=\"modelo\"><select class=\"wpcf7-form-control wpcf7-select\" aria-invalid=\"false\" name=\"modelo\"><option value=\"\">Select<\/option><option value=\"Pressure reducing valve\">Pressure reducing valve<\/option><option value=\"Relief or excess pressure valve\">Relief or excess pressure valve<\/option><option value=\"Control valve\">Control valve<\/option><option value=\"Safety valve\">Safety valve<\/option><option value=\"I don&#039;t know \/ I need advice\">I don&#039;t know \/ I need advice<\/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, water, oxygen, oil\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>Outlet or set 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. 5 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><label>Connection and size<span class=\"wpcf7-form-control-wrap\" data-name=\"conexion\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"e.g. DN50, weld ends\" value=\"\" type=\"text\" name=\"conexion\" \/><\/span><\/label><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\">Tell us about your case<\/a><\/p><\/div><\/article><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Home\u203aValve design Designed and manufactured in Badalona since 1962 Custom valve design If you cannot find the valve you need in our catalog, we study your application and adapt an existing valve or design a custom one, for steam, liquids, or gases. We start from our reducing, relief, and control valves and change whatever your ... <a title=\"Custom valve design\" class=\"read-more\" href=\"https:\/\/www.valfonta.com\/en\/control-valve-design\/\" aria-label=\"Read more about Custom valve design\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_generate-full-width-content":"true","_generate-disable-headline":"true","rank_math_title":"Custom valve design for industry | Valfonta","rank_math_description":"Valfonta adapts and custom-designs reducing, relief, and control valves: super duplex, weld ends, clamp, reduced Kv, special gaskets.","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\":\"WebPage\",\"@id\":\"https:\/\/www.valfonta.com\/en\/control-valve-design\/#webpage\",\"url\":\"https:\/\/www.valfonta.com\/en\/control-valve-design\/\",\"name\":\"Custom valve design for industry | Valfonta\",\"description\":\"Valfonta adapts and custom-designs reducing, relief, and control valves: super duplex, weld ends, clamp, reduced Kv, special gaskets.\",\"isPartOf\":{\"@id\":\"https:\/\/www.valfonta.com\/#website\"},\"about\":{\"@id\":\"https:\/\/www.valfonta.com\/#organization\"},\"inLanguage\":\"en\",\"datePublished\":\"2020-02-03T13:22:44+02:00\",\"dateModified\":\"2026-01-13T10:33:32+02:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.valfonta.com\/en\/control-valve-design\/#breadcrumb\"},\"primaryImageOfPage\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valvulas-de-valfonta.webp\"}},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.valfonta.com\/en\/control-valve-design\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.valfonta.com\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Valve design\",\"item\":\"https:\/\/www.valfonta.com\/en\/control-valve-design\/\"}]},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/www.valfonta.com\/en\/control-valve-design\/#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is a custom valve?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is a valve adapted to a specific application when the standard model does not fit: with a different material, connection, gaskets, Kv, or pressure range, or designed specifically for your process.\"}},{\"@type\":\"Question\",\"name\":\"What fluids can custom valves handle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Steam, liquids, and gases. For oxygen, several models are supplied degreased on request, and specific gaskets are available for mineral oils.\"}},{\"@type\":\"Question\",\"name\":\"Do you make valves in super duplex?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Duplex and super duplex are offered on request in the PRV20, PRV30, PRV44, PRV45, VD, M1, and M2 reducing valves and in the PRV53, PRV54, PRV55, S1, S2, and S3 excess pressure valves.\"}},{\"@type\":\"Question\",\"name\":\"What special connections can be ordered?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Weld ends (socket weld or butt weld) on reducing valves, excess pressure valves, and the C1, and clamp connection on several small-size stainless steel models (PRV30, PRV44, PRV45, PRV53, PRV54, and PRV55).\"}},{\"@type\":\"Question\",\"name\":\"Do custom valves comply with PED and ATEX?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Valfonta\u2019s quality system is certified to Module D1 of Directive 2014\/68\/EU, and CE marking depends on size, pressure, and fluid. If the valve will be installed in an ATEX zone, tell us when you order it. See our certificates.\"}},{\"@type\":\"Question\",\"name\":\"What data do you need to study my case?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The fluid and its temperature, the valve\u2019s function, the inlet and outlet pressures or set pressure, the maximum and minimum flow rate, the connection and material, and the regulatory requirements. The more complete they are, the sooner we can propose a solution.\"}}]}]}]","footnotes":"","_vg_translation_of":"40","_vg_lang":"en","_vg_wpml_state":"{\"lang\":\"en\",\"trid\":\"40\",\"src\":\"es\"}"},"class_list":["post-618","page","type-page","status-publish"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/pages\/618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/comments?post=618"}],"version-history":[{"count":8,"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/pages\/618\/revisions"}],"predecessor-version":[{"id":10269,"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/pages\/618\/revisions\/10269"}],"wp:attachment":[{"href":"https:\/\/www.valfonta.com\/en\/wp-json\/wp\/v2\/media?parent=618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}