Applications of industrial pressure reducing valves: technical uses and real-world examples

Pressure reducing valves are essential components in a wide range of industrial and domestic systems. Their main function is to keep downstream pressure stable, even when there are fluctuations in the upstream pressure. This helps to protect sensitive equipment, ensure reliable operation, and improve energy efficiency.

When properly installed, these valves not only prevent overpressure damage but also optimise the performance of boilers, heat exchangers, tanks and pipelines — extending their service life. They also help to reduce energy consumption and lower maintenance costs.

At Valfonta, we have over 50 years of experience manufacturing pressure reducing valves for a wide variety of applications. Our range includes both standard and custom-made solutions for sectors such as chemicals, pharmaceuticals, energy, food processing and water treatment, among others.

We design technically advanced solutions that comply with international standards and provide reliable performance even under demanding conditions. Thanks to our continuous innovation and highly specialised technical team, we can deliver robust, efficient and high-performance valves for any type of installation.

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These valves are essential in systems where downstream pressure must be reliably reduced and stabilised. Their installation is crucial in processes where excessive pressure might cause significant problems, including:

Damage to components or machinery: Excessive pressure can accelerate wear and tear, potentially causing fractures in pipes, valves, and other critical system components, thus shortening their operational life and increasing maintenance costs.

Increased energy consumption: Running a system at higher-than-necessary pressure is inefficient, putting unnecessary stress on pumps, compressors, and boilers, which results in increased energy usage and higher operational costs.

Fluid leaks or losses: Overpressure can compromise sealing and connection integrity, leading to leaks of gases, liquids, or vapours, posing environmental, safety, and economic hazards.

Safety risks to operators: Excessively high pressure outside safe operational limits poses genuine risks to personnel. It can lead to severe accidents, such as sudden ruptures, explosions, or violent fluid releases, endangering worker safety and facility integrity.

Therefore, installing appropriate pressure reducing valves is essential to ensuring the efficient, safe, and cost-effective operation of any industrial installation.

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Here are some of the most common applications for pressure reducing valves:

• Protecting electric water heaters: avoids damage caused by overpressure in boilers or hot water tanks.
  
• Regulating pressure in water and gas networks: improves overall efficiency and extends the lifespan of piping systems.
• Low-pressure irrigation systems: ensures a steady and safe flow without damaging emitters or sprinklers.

• Pressure control in steam, compressed air or neutral gas lines: essential for keeping stable conditions in critical operations.
  
• Circuits with heat exchangers: ensures effective thermal transfer without stressing the system.
  
• Cylinders, autoclaves or press-driven equipment: protects machinery that is sensitive to pressure variations.
• Laundries, steam irons and dyeing plants: delivers precise steam control to avoid process inefficiencies or equipment damage.

Pressure excess valve PRV55

Pressure relief valve S3

• Systems using technical fluids that require stable pressures: critical in processes where even slight pressure changes can affect product quality.
• Plants with frequent thermal shifts: avoids overpressure due to thermal expansion in sensitive pipelines.

• Filtering stations and flow control systems: stabilise pressure to protect membranes and ensure consistent output.
• Filling systems and pipelines: prevent water hammer and pressure surges that can damage infrastructure.

Our catalogue includes self-acting pressure reducing valves that operate without external power supply and cover a wide range of working pressures and temperatures:

• M1 / M2 / M2+Bellows: robust, direct-acting or balanced valves for steam, air and liquids. Suitable for pressures up to 40 barg.
  
• PRV20 / PRV30 / PRV44 / PRV45: compact, balanced by piston or bellows, made of AISI 316L stainless steel. Perfect for space-constrained installations.
  
• VD: direct-acting piston valve, ideal for neutral gases and water.
  

Each model is available in a range of sizes (DN8 to DN150), connection types (threaded or flanged), and materials depending on the fluid being handled.

In many systems, pressure reducing valves are used alongside other key components:

• Relief valves (PRV/S): these open automatically when system pressure exceeds a set limit, protecting downstream equipment.
• Control valves (model C1): allow fine and dynamic pressure regulation via pneumatic actuators.

At Valfonta, we offer specialist technical advice to help you choose the most suitable valve for your system — taking into account working pressure, fluid type, temperature, chemical compatibility and required certifications (ATEX, PED, CE).

Our team of engineers can support you through every phase of the project: from initial design or retrofit, to commissioning, integration with other components and preventive maintenance planning.

We also provide custom-designed solutions for unique or complex installations.

Feel free to contact us on (+34) 93 372 08 88, by email at valfonta@valfonta.com or via our online contact form.

Trust in Valfonta’s expertise to enhance the safety, performance and efficiency of your industrial system.