stainless steel relief valves

Expertly designed relief valves with a maximum working pressure of 6000psi. The highest quality in pressure relief, manufactured within the UK and produced from stainless steel.

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Threads And Connections

Range of end connections available in single and twin ferrule OD Compression
(BSP, BSPT, NPT)

Sizes include 1/8″, 1/2″, 3/16″ and many more.

The maximum working pressure of our stainless steel relief valves is 6000PSI

Temperature Ratings

Temperature Range Viton	-20 to 200C
Temperature range High Nitrile	-40 to 120C
Cracking pressure	Adjustable from 100 to 6000PSI
Maximum working pressure	6000PSI
Outlet maximum working pressure	1500PSI

Relief Valve Materials

The standard material for our relief valves is stainless steel 316. However, special metals can be used to enhance the overall corrosion resistance and durability of your valve in extreme conditions.

We offer: Incoloy 825, 6MO, Monel 400, Titanium, Hastelloy, Inconel 625 and Duplex/Super Duplex Stainless Steel. A full listing on materials of construction and material certifications can be provided on request.

Waverley Brownall also offer Positive Material Identification (PMI) testing with state of the art equipment.

Testing

Each relief valve is individually tested for pressure relief operation and sealing performance based on BS 6755 P1.

The Waverley Brownall inspection engineers also ensure the safety and quality of your relief valve.

State of the art test guns can be used to positively identify the exact materials and alloy consistency within your fittings and valves.

If you would like this service with orders of exotic alloy relief valves EG. Monel 400, email us at enquiries@waverleybrownall.co.uk

Spring Selection Chart

	PSI Rating	Bar	Colour	Part No.
A	100-500	3.4-34	Yellow	PRV13
B	500-1000	34-68	Purple	PRV14
C	1000-2000	68-136	Orange	PRV15
D	2000-3000	136-204	Brown	PRV16
E	3000-4000	204-272	White	PRV17
F	4000-5000	272-340	Red	PRV18
G	5000-6000	340-408	Green	PRV19

Please state opening pressure or spring requirement when ordering.

Cracking Pressure

The cracking pressure on valves that have not been used for long periods of time may be above the set pressure.

Any Questions?

Feel free to contact our team on enquiries@waverleybrownall.co.uk for any questions you may have regarding our relief valves and fittings.

Stainless Steel Relief Valves

When inline pressure exceeds the force exterted by the spring, the valve stem opens.

The flow through the relief valve is proportional to the pressure increase. As our valve is balanced, the cracking pressure is not effected by the outlet back pressure.

The pressure relief valve setting can be adjusted by rotating the adjustment cap.

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Relief Valve Features

Cracking pressures from 100 PSI to 6000 PSI

316 Stainless Steel as standard with special metals available for corrosion resistance properties

A choice of seals

Double and single ferrule connectors available

BSP, BSPT and NPT

Maximum working pressure of 6000 PSI

Each valve is individually tested for pressure relief operation and sealing performance

Pre-set of the pressure relief to order is available

Temperature range (Viton) -20 to 200 celsius

Technical Specifications

Temperature range Viton	-20 to 200 celsius
Temperature range High Nitrile	-40 to 120 celsius
Cracking Pressure	Adjustable from 100 to 6000 PSI
Maximum Working Pressure	6000 PSI
Outlet Maximum Working Pressure	1500 PSI

Strainer/Inline Tee Filter

This piece of equipment is designed for liquid and gas applications. Available in a wide range of mesh or sintered sizes.

Air Flow Pressure Chart

Water Flow Pressure Chart

For more information on our Pressure Relief Valves, email us today at:

Relief Valves In Stainless Steel