Pressure Reducing Valve (PRV)
Self-regulating globe-type valve that automatically reduces inlet pressure to a safe, constant downstream set pressure.
Technical Specifications
| Type | Direct-Acting / Pilot-Operated PRV |
| Size Range | 1/2" to 10" (15 mm to 250 mm) |
| Body Materials | Bronze, Carbon Steel, Stainless Steel 316 |
| Trim | SS316, Monel, Bronze |
| Set Pressure | Adjustable (customer specified downstream pressure) |
| End Connections | Screwed, Flanged |
| Pressure Rating | Inlet up to Class 600; outlet as set |
| Standards | ASME B16.34,EN 1567,ASSE 1003 |
| Lead Time | Ex-stock Gujarat: Same day | Standard items: 2–4 weeks | Exotic alloys: 8–12 weeks |
Applications
Steam distribution, utilities, building services, water systems, compressed air
About the Pressure Reducing Valve (PRV)
The pressure reducing valve (PRV) is a self-actuated, spring-loaded globe-type valve that automatically maintains a constant downstream pressure regardless of changes in inlet pressure or downstream flow demand. The valve senses downstream pressure via a diaphragm or piston connected to the disc: when downstream pressure falls below the set point (demand increases), the diaphragm moves, allowing the disc to lift further from the seat and increasing flow; when downstream pressure rises above set point (demand decreases), the diaphragm drives the disc toward the seat, reducing flow. This continuous self-regulation requires no external power source - the PRV is entirely self-contained and self-operating.
Two primary designs are available: direct-acting PRVs use a single diaphragm or piston connected directly to the disc, suitable for smaller sizes (1/2"–2") at moderate flow rates; pilot-operated PRVs use a small direct-acting pilot valve to sense downstream pressure and pilot a larger main valve, providing better pressure accuracy (±1% vs ±5%), higher capacity, and stable operation over a wider flow range for larger sizes (2"–10"). Vajra Industrial Solutions supplies both types in Bronze (for water and steam up to 175°C), Carbon Steel (for steam to 350°C), and SS316 (for corrosive or high-purity service), set to customer-specified downstream pressures with adjustment capability of ±20%.
Where It's Used
Key industries and applications for the Pressure Reducing Valve (PRV)
Steam distribution
Carbon Steel PRVs stepping down HP steam (10–15 bar) from a boiler main header to low-pressure steam users (2–4 bar) for heating coils, sterilisers, jacketed vessels, and HVAC humidifiers; pilot-operated design for precise control at high flow rates
Building hot water and potable water supply
Bronze PRVs reducing municipal water mains pressure (6–10 bar) to safe building distribution pressure (3–5 bar); WRAS-approved Bronze or SS316 body for potable water compliance
Compressed air distribution
Carbon Steel or SS316 PRVs stepping down plant air header pressure (7–10 bar) to instrument air (6 bar), tool air (4 bar), and process air (2–3 bar) sub-headers; pressure accuracy is critical for pneumatic actuator control systems
Pharmaceutical clean steam
SS316 pilot-operated PRVs on clean steam supply to sterilisers, autoclave jacket, and product contact steam systems; electropolished internals and documentation for GMP compliance
Industrial gas distribution
SS316 PRVs for nitrogen, CO2, and argon cylinder manifold pressure reduction; two-stage (high-pressure cylinder PRV + low-pressure process PRV) for stable delivery pressure
How to Choose the Right Pressure Reducing Valve (PRV)
Select direct-acting PRV for small sizes (1/2"–2") with moderate flow variation; select pilot-operated PRV for 2" and above, high accuracy (±1%), or large turndown ratio requirements. Specify the inlet pressure, required set outlet pressure, and maximum flow rate - these three parameters determine the required Cv and body size. Always install PRVs with upstream isolation valve and downstream pressure gauge to allow set-pressure adjustment and isolation for maintenance. Specify Bronze body for water/steam to 175°C; Carbon Steel for steam to 350°C; SS316 for corrosive or high-purity applications.
Popular Configurations
Most commonly ordered specifications for the Pressure Reducing Valve (PRV)
Frequently Asked Questions
About Pressure Reducing Valve (PRV) - ordering, specs, delivery & compliance
What standards does the Pressure Reducing Valve (PRV) comply with?+
Our Pressure Reducing Valve (PRV) complies with ASME B16.34, EN 1567, ASSE 1003. All products are manufactured to international standards and come with full material test reports (MTR), dimensional inspection reports, and hydrostatic test certificates on request.
What materials are available for the Pressure Reducing Valve (PRV)?+
The Pressure Reducing Valve (PRV) is available in Bronze, Carbon Steel, Stainless Steel 316. Material selection depends on your process fluid, temperature, pressure, and corrosion requirements.
What is the delivery lead time for Pressure Reducing Valve (PRV)?+
Standard stock sizes are available for immediate dispatch from our Vadodara warehouse. Custom sizes and special materials typically have a lead time of 2–6 weeks depending on specifications. We serve customers across India within 1–7 business days and export to the Middle East, Southeast Asia, Europe, and the Americas with full export documentation.
Can I get a custom Pressure Reducing Valve (PRV) for a specific application?+
Yes. Vajra Industrial Solutions supplies custom-engineered globe valves for specific process conditions. Submit your technical requirements - including pressure class, temperature range, fluid type, end connections, and any special trim or coating needs - via our RFQ form or WhatsApp, and our engineering team will respond within 24 hours.
What pressure ratings are available for the Pressure Reducing Valve (PRV)?+
The Pressure Reducing Valve (PRV) is available in pressure ratings of Inlet up to Class 600; outlet as set. Higher-pressure classes are available for critical service applications in oil & gas, power generation, and chemical processing.
How do I request a quote for the Pressure Reducing Valve (PRV)?+
You can request a quote by clicking the "Request Quote" button on this page, filling out our RFQ form at vajravyuh.com/rfq, emailing us at sales@vajravyuh.com, or WhatsApping us directly at +91-9979774557. Please include quantity, size, pressure class, material grade, and end-connection type for the fastest response.
Need a Quote for Pressure Reducing Valve (PRV)?
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