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Technical blog

Industrial valve technical blog

Practical guides to selecting, installing, adjusting, and maintaining pressure reducing valves, relief and control valves, and steam ejectors and injectors.

All 44Pressure reducing valves 16Relief and safety 13Control and design 7Ejectors and injectors 3General guides 5

Latest article · Pressure reducing valvesPressure reducing valve for steam: installation, management, and maintenanceA steam pressure reducing valve operates stably when it is part of a pressure reducing station with shutoff valves, a strainer, a moisture separator and steam trap, pressure gauges, and downstream overpressure protection. During installation, straight pipe runs must be respected, condensate must be drained, and a larger-diameter outlet pipe must be provided. Typical problems are water hammer, wet steam, and pressure fluctuations, and an annual inspection of the strainer, gaskets, and seat is recommended. Valfonta offers the M1, M2, M2 with bellows, PRV44, and PRV45 models. · 10 min readRead the article →

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  1. Where should a pressure reducing valve be installed?Pressure reducing valves · 6 min
  2. Pressure reducing valve symbols: characteristics and representationsPressure reducing valves · 6 min
  3. What is the difference between a safety valve and a pressure relief valve?Relief and safety · 9 min
  4. What problems do pressure reducing valves commonly have?Pressure reducing valves · 6 min
  5. Control valve: types and recommendations from ValfontaControl and design · 8 min

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38 articles

Pressure reducing valvesPressure reducing valve for steam: installation, management, and maintenanceA steam pressure reducing valve operates stably when it is part of a pressure reducing station with shutoff valves, a strainer, a moisture separator and steam trap, pressure gauges, and downstream overpressure protection. · 10 min read

Relief and safetyPressure relief valve for water, steam, and gases: definition and operationA pressure relief valve discharges fluid when the pressure exceeds the set pressure, protecting the installation against overpressure that could rupture equipment and piping. · 10 min read

Pressure reducing valvesPressure reducing valves: applications and industries where they are essentialA pressure reducing valve maintains a stable, safe outlet pressure downstream, regardless of variations in inlet pressure or demand. · 8 min read

General guidesIndustrial valve classes: types, functions, and how to choose the right oneAn industrial valve is a mechanical device that controls the passage of a fluid (liquid, gas, or steam) to shut it off, regulate its flow or pressure, or protect the installation against overpressure. · 9 min read

Pressure reducing valvesWater pressure reducing valve: what it is, how it works, and how to choose oneA water pressure reducing valve reduces the supply pressure and keeps it stable at a safe value, protecting the installation against leaks, noise, and failures. · 9 min read

Relief and safetyPressure relief in mining slurry lines: abrasion resistance that lastsHow to specify abrasion-resistant pressure relief valves for mining slurry pipelines in the U.S. and Canada. Materials, sizing, and maintenance from Valfonta. · 13 min read

General guidesEuropean Engineering, American Compliance: The Valfonta StandardDiscover how Valfonta brings European-engineered pressure control valves to the U.S. market with full ANSI, ASME, and ASTM compliance. European valves in USA. · 13 min read

Pressure reducing valvesStainless steel PRVs valves for desalination plants in coastal USAFighting corrosion in US coastal plants? Discover Valfonta's solid bar stock PRVs (316Ti/Duplex). High-pressure brine rejection & NPT/ANSI compatibility. · 10 min read

Relief and safetyHow to prevent “chattering” (vibration) in pressure relief valvesChattering in a pressure relief valve is the rapid, violent opening and closing of the plug against the seat, caused by an imbalance between the spring and the fluid pressure. · 13 min read

Pressure reducing valvesBellows pressure reducing valves: complete protection against external leakageA pressure reducing valve with a sealing bellows replaces the stuffing box with a metal bellows welded to the stem and the bonnet, which eliminates external leakage along the stem. · 12 min read

Pressure reducing valvesTechnical comparison: piston vs. diaphragm reducing valvesThe choice between a piston and a diaphragm pressure reducing valve depends on the required accuracy, the pressure, the temperature, and the cleanliness of the fluid, not on the initial cost. · 11 min read

Pressure reducing valvesCavitation in pressure reducing valves: causes, solutions, and recommendationsCavitation in a pressure reducing valve occurs when the pressure drops below the vapor pressure at the vena contracta and the bubbles collapse as the pressure recovers downstream, eroding the seat, plug, and body. · 8 min read

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Val Fonta, S.L. · C/ Bronze 26, 08915 Badalona (Barcelona)

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VALFONTA has been a beneficiary of the European Regional Development Fund, whose objective is to improve the use and quality of, and access to, information and communication technologies, and thanks to which it has been able to implement a production and plant control system (MES system). This action took place during 2022. To this end, it has had the support of the Industria 4.0 program of the Barcelona Chamber of Commerce

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VALFONTA has received a grant for the purchase of a 100% electric vehicle under the Efficient and Sustainable Mobility Incentive Program (MOVES III) of the Ministry for the Ecological Transition and the Demographic Challenge, through ICAEN.

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