Pressure Reducing Valves

At Process Systems, we stock an extensive selection of pressure-reducing valves (PRVs) covering a full spectrum of sizes, connection types, and media compatibility. Our valves are built for long-term performance in steam, fluid, and water systems. Whether you’re protecting other equipment, managing system pressure, or regulating incoming water pressure, our PRVs are designed to maintain constant pressure downstream, no matter what is happening upstream.

We offer both direct-acting and pilot-operated PRVs in a variety of body materials, sizes, and connection types, including BSP threaded and flanged configurations. Our valves are suitable for a wide range of industrial and commercial applications, providing reliable pressure management even under fluctuating demand or high-pressure conditions. Find the right valves for your system and order now for free shipping on all orders Australia-wide. 

PRV types and configurations

We supply PRVs suitable for a wide variety of media, including:

  • Water pressure reducing valves for domestic, commercial, and irrigation use
  • PRVs for steam, including options suited to temperature-sensitive applications
  • PRVs for compressed air and industrial fluids

You can choose from two primary types:

  • Direct acting PRVs – Simple and compact, ideal for smaller systems or low flows
  • Pilot-operated PRVs – Best for systems with fluctuating demand, larger flow rates, or where tight pressure control is essential

All valves are available in a range of pressure ratings, connection sizes and body materials to suit your application.

Common PRV applications

Our pressure-reducing valves are used across countless industries. Some typical uses include:

  • Reducing incoming water pressure to safe levels in buildings
  • Managing system pressure in processing plants
  • Controlling pressure in cold water booster systems
  • Ensuring consistent operating conditions for sensitive equipment
  • Maintaining correct pressure zones in multi-storey plumbing setups
  • Regulating pressure in steam systems to prevent overheating and product spoilage

Whether you need a pressure reduction valve for a chemical plant, a brewery, or a commercial building, we can help you find the right fit.

Why choose Process Systems for PRVs?

At Process Systems, we combine technical knowledge with fast delivery and top-tier product quality. Our range of pressure-reducing valves is stocked and ready to ship, so you don’t have to wait to get your system under control.

  • Huge range of BSP and flanged PRV valve options
  • Reliable, long-lasting construction
  • Full support and advice from valve specialists
  • Material and pressure test certificates available
  • Free freight available on qualifying online orders

Need help selecting the right pressure reduction valve? Contact our team today — we’re here to help you manage system pressure, protect your equipment, and maintain constant pressure under any conditions.

Order pressure reducing valves online and get free shipping Australia-wide. Shop now!

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FAQs about our pressure reducing valves

  • What is a pressure-reducing valve?

    A pressure-reducing valve (or PRV valve) is a control valve that automatically reduces a higher upstream pressure to a steady, lower pressure on the outlet side. They protect systems and equipment by controlling excessive pressure from the supply line and maintaining a safe, consistent pressure downstream.

    PRVs are used in everything from large-scale systems like high-rise buildings, city mains and municipal networks to everyday household plumbing, helping protect fixtures and preserve consistent pipe characteristics.

    In water pressure reducing valve systems, PRVs help stabilise flow across pressure zones, reducing wear and improving efficiency. In steam applications, they can also act as a form of temperature control. Because steam temperature is directly related to pressure, reducing the pressure also reduces temperature. This is critical in processes where overheating can damage products or systems.

  • How does a pressure-reducing valve work?

    Most pressure-reducing valves operate using a balance of forces between the downstream pressure and an internal spring or control chamber. Here’s a basic overview:

    • Incoming gas or fluid enters the PRV.
    • The valve senses downstream pressure.
    • When the set pressure is reached, the valve modulates to maintain that level.
    • As demand or flow changes, the valve adjusts accordingly to hold a constant pressure.

    The most common PRVs are self-acting PRVs. These models don’t require external power or inputs and can perform well across a wide range of flow rates and lower pressures.

  • Do PRVs help with temperature control in steam systems?

    Yes. In saturated steam systems, temperature is directly linked to pressure. By using a pressure-reducing valve, you can reduce the steam temperature as well, helping avoid overheating or product spoilage in sensitive processes.

  • How long will a pressure-reducing valve last?

    A well-chosen and properly installed pressure-reducing valve can last many years. That said, performance depends on factors like media quality, system design, and maintenance frequency.

    For steam systems in particular, we recommend inspecting the valve internally at least once a year. Cleaning or replacing parts as needed will help the valve maintain consistent pressure, reducing performance for the long haul.

  • How do I install a pressure reducing valve?

    Pressure reducing valves should always be installed in accordance with the manufacturer’s recommendations. Remember to keep in mind the following:

    • Ensuring the correct direction of flow and proper valve orientation
    • Allowing clear access for ongoing maintenance and repairs
    • Selecting appropriate end connections (flanged or threaded), depending on the system
    • Installing a pressure gauge on the downstream side to confirm the set pressure
    • Accounting for any pressure relief or safety requirements downstream of the valve

    In some cases, a separate safety valve may be required. This should be installed and set to a safe pressure to prevent over-pressurisation of the system.

  • What are typical uses of a Pressure Reducing Valve?

    Pressure reducing valves are used in a wide range of applications to maintain safe and stable operating conditions. Common reasons for using a PRV include:

    • Controlling process pressure to meet system or safety requirements
    • Managing process temperature in systems like steam, where pressure and temperature are directly related
    • Protecting equipment by regulating operating pressure within safe limits
    • Ensuring consistent operating temperature for temperature-sensitive machinery or processes

  • What causes PRVs to fail early?

    The most common causes include dirty media, improper sizing, or incorrect installation. That’s why we recommend upstream strainers and annual inspections, especially in steam or dirty water systems.

  • Can I install the PRV myself?

    Yes, if you're experienced with plumbing or industrial systems. Just make sure to:

    • Check the flow direction
    • Ensure correct orientation
    • Allow for clear access
    • Use thread sealant if required

    If unsure, consult a qualified installer.

  • What kind of warranty do your PRVs come with?

    All of our pressure-reducing valves come with a 12-month warranty. Each valve is tested before dispatch, and we maintain strict quality control for every item we ship.

  • How quickly will I receive my order?

    If you choose express shipping, most metro areas across Australia receive orders (under 5 kg) by the next business day. Standard freight usually arrives within 3 days, depending on your location.