Waverley Brownall

Our philosophy is dominated by quality.

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Stainless Steel Pressure Relief Valves, Relief Valves UK

Stainless Steel Pressure Relief Valves, Relief Valves UK

Stainless steel pressure relief valves are used for a variety of applications. Waverley Brownall manufacture and stock precision relief valves made from 316 stainless steel.

Our relief valves and strainers have a safe working pressure of 6000 PSI and are available in a wide range of end connections.

Stainless Steel Pressure Relief Valves: Compression Ends

Our relief valves are available in different thread forms and are compatible with our single and twin ferrule compression fittings.

Ringlok® : Twin ferrule compression OD fittings
Duoloc® : Single ferrule compression OD 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
enquiries@waverleybrownall.co.uk

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

water flow chart pressure relief valve

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

enquiries@waverleybrownall.co.uk

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High Pressure Needle Valves, Instrumentation Needle Valves

High Pressure Needle Valves, Instrumentation Needle Valves

High pressure needle valves are used in some of the most extreme engineering applications. Our needle valves are general-purpose, making them useful for both liquid and gas applications.

Where an isolation of flow is needed, or the equalisation and venting of pressure is required, our valves hold strong performance.

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High Pressure Needle Valves: High Quality Flow Instrumentation

Waverley Brownall ‘s precision valves allow for regulation of flow at high pressures. Some of our needle valves are available for applications of up to 10,000 PSI and temperatures up to an impressive 400 ºC.

stainless steel needle valves
  • Any combination of ends from NPT, BSPP, BSPT, single and twin ferrule compression

Temperature range (PTFE) is -20 to 200ºC, and with Graphite it is -20 to 400ºC.

High Pressure Needle Valve Technical Specifications

Waverley Brownall Needle Valves
 0-6000PSI (Pressure range)
0-10,000PSI (Extended range)
Factor of Safety 4:1
CV Rating (Open) 0.30
Seat Type: Metal to metal
Orifice 3.80mm

Our high pressure needle valves are designed to include: T bar handle, lock screw, dust cap, gland adjuster, spindle, lock nut, gland yoke, gland packing, bonnet, body seal and the needle.

Pressure VS. Temperature Performance

See below the performance chart for Waverley Brownall’s needle valves (Pressure VS temperature) and valve turns VS CV. The pressure rating is PSI and the temperature is measured in Celsius.

high pressure needle valves

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Stainless Steel Needle Valves Available Today!

Our needle valves meet the requirements of the severe applications. They are designed and manufactured for the highest quality of safety and endurance.

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Find below the tables featuring Thread, Part No and dimensions for a selection of our needle valves.

*Note: For the full selection, download our FREE catalogue.

Here are three examples of our needle valve range:

  • A Female/Female 3 piece body with bleed
  • A Male/Female Single Piece Body
  • A Ringlok Compression End Three Piece Body with Bleed (Ringlok are our twin ferrule compression fittings range.)
female female three piece body with bleed

Female/Female 3 Piece Body With Bleed

NPT

Thread Part No Dim A Dim B Dim C
1/4 NPT NV2N-3-B 2.25 4.00 3.87
3/8 NPT NV3N-3-B 2.25 4.00 4.30
1/2 NPT NV4N-3-B 2.25 4.00 4.42

BSPT

Thread Part No Dim A Dim B Dim C
1/4 BSPT NV2T-3-B 2.25 4.00 3.87
3/8 BSPT NV3T-3-B 2.25 4.00 4.09
1/2 BSPT NV4T-3-B 2.25 4.00 4.42

BSP

Thread Part No Dim A Dim B Dim C
1/4 NPT NV2P-3-B 2.25 4.00 3.75
3/8 NPT NV3P-3-B 2.25 4.00 4.09
1/2 NPT NV4P-3-B 2.25 4.00 4.37
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male female single piece body needle valve

Male/Female Single Piece Body

NPT

Thread Part No Dim A Dim B Dim C
1/4 NPT NV2N 2.25 4.00 2.69
3/8 NPT NV3N 2.25 4.00 2.69
1/2 NPT NV4N 2.25 4.00 2.69
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ringlok compression end three piece body with bleed

Ringlok Compression End 3 Piece Body With Bleed

O/D Size Ringlok Part No Dim A Dim B Dim C
6mm NV 6M=OD-3-B 2.25 4.00 4.23
8mm NV 8M=OD-3-B 2.25 4.00 4.29
10mm NV 10M=OD-3-B 2.25 4.00 4.35
12mm NV 12M=OD-3-B 2.25 4.00 4.55
O/D Size Ringlok Part No Dim A Dim B Dim C
1/4 NV2=OD-3-B 2.25 4.00 4.24
3/8 NV3=OD-3-B 2.25 4.00 4.34
1/2 NV4=OD-3-B 2.25 4.00 4.55
5/8 NV5=OD-3-B 2.25 4.00 4.55
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Speak to us about our extensive range of instrumentation today!

Many more high pressure needle valves are available from Waverley Brownall.

If you require needle valves for highly corrosive environments, contact us for information on our special alloy materials. These include: Monel 400, Incoloy 825 and Titanium.

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Miniature Check Valves In Stainless Steel | Small Check Valves

Miniature Check Valves In Stainless Steel | Small Check Valves

The Waverley Brownall miniature check valve (MCV) series are valves that are a compact, one body piece valve used for unidirectional flow. Our stainless steel miniature check valves can be used for the control of flow up to a 6000psi rating with minimal pressure drop.

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Stainless Steel Miniature Check Valves  (Overview)

Features Applications
Working pressure up to 6000psi Prevents reverse flow
Fully encapsulated seal One-piece machined body
Variety of cracking pressures Stainless steel 316
Minimal pressure drop Special metals options
Expert design and manufacture Liquid or vapour service
Adjustable spring Low pressure relief valve
Fully contained O-Ring seal Air and water flow

Testing

Waverley Brownall check valves have been tested for sealing performance based on BS 6755 Pt1. Low pressure and high pressure tests.

Seal Kits

Seal kits are supplied for necessary maintenance and consist of poppet O ring seal.

Cleaning and Packaging

All miniature check valves are dispatched fully degreased and sealed. Cleaning for oxygen use on application.

Springs

Spring material is 304 stainless steel with body piece of 316 stainless steel. Please specify material preferences on order.

  • Up to 6000psi
  • A range of end connections are available
  • Fully encapsulated seal (choice of seal)
  • Variety of cracking pressures up to 350psi
  • Minimal pressure drop
  • Bubble-tight shut off
  • Standard CV check valves are also available in stainless steel which is a Poppet type valve for flow control procedures (single and double ferrule OD compression compatible.)
  • Valve connections in NPT, BSPT and BSP threads
  • Official Waverley Brownall product
  • Material certification provided on request
  • Fully boxed and packed securely in branded packaging with the Waverley Brownall logo present
  • Valves will be marked with a cast code as standard
  • Highly corrosion-resistant alloys can be used to manufacture your miniature check valves – Get your quote for this service on enquiries@waverleybrownall.co.uk 
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End connections include both male and female threaded formats and twin ferrule compression fitting ends (Ringlok.)

Other Valves From Waverley Brownall

Waverley Brownall manufacture and supply a wide range of valves within the UK and across the world. This includes ball valves, relief valves, CV series check valves, needle valves and manifolds.

enquiries@waverleybrownall.co.uk

For any questions, please email us at the address above and your question will be sent to the appropriate team member.

Waverley Brownall always do our utmost to reply to emails within a few days or less, depending on the urgency of your requirements.