The Waverley brownall range of stainless steel check valves is one of the most comprehensive in the World.
Our standard valve is the CV series which is designed to give unidirectional flow control of liquids and gases with a minimal pressure drop. It is a general purpose poppet type check valve for flow control up to pressures of 3000 psi. The CV series is available in a wide range of inlet and outlet port connections from 1/4″ to 1/2″.
The Waverley brownall mini valve is the MCV and ACV series which are miniature, compact one piece body check valves for unidirectional control of flow up to pressures of 6000 psi. The MCV is our standard pre-set Mini valve while the ACV series valve comes with an adjustable spring to give a variable cracking pressure.
CV SERIES CHECK VALVES
Benefits, applications and design features
Features
- Robust design
- Poppet mounted seal
- Choice of PTFE of Viton seals
- Variety of cracking pressures
- Minimal pressure drop
- Bubble tight shut off
Applications
- Prevents reverse flow
- Low pressure relief valve
- Locks upstream pressure
- Up to 3,000psi
- Liquid or vapour service
Benefit
- Body precision machined from 316 Stainless Steel incorporating male female threaded connections, Duoloc® and Ringlok® compression ends.
Poppet machined from 316 stainless steel incorporating PTFE or Viton seal. - Choice of springs for a range of preset cracking pressures.
- Endcap manufactured from 316 stainless steel, with precision machined cone for bubble tight shut off (PTFE or Viton seal).
Testing
Waverley check valves have been tested for sealing performance based on BS 6755 Pt1. These tests consist of: Low pressure (50psi 3.5 bar) High pressure shell (4,500psi 310 Bar)
Seal kits
Seal kits are supplied for necessary maintenance.
These consist of poppet and endcap seals and a new spring.
Cleaning and packaging
All check valves are dispatched fully degreased and sealed. Cleaning for oxygen use on application.
MINI CHECK VALVES
Benefits, applications and design features
Features
- Working pressure up to 6,000psi.
- Fully encapsulated seal
- Choice of Viton or Buna N seal
- Variety of cracking pressures from 2 to 350psi
- Minimal pressure drop
- Bubble tight shut off
Applications
- Prevents reverse flow
- Low pressure relief valve
- Locks upstream pressure
- Up to 6,000psi
- Liquid or vapour service
- Low pressure relief valve
Design Features
- Fully contained O-ring seal
- One piece precision machined body
- Adjustable spring Lock screw to maintain crack pressure.
Technical specifications
Pressure range 0-6000psi
Temperature range Viton -23 to 200ºC
Temperature range High Nitrile -40 to 120ºC
Factor of safety. 4:1
Nominal cracking pressure 3, 5, 10, 20, 40, 60,
100, 150 psi
CV rating Also see flow graphs
1/4″ 0.30
1/2″ 0.92
Materials of construction
Part Description Material
Body 316 stainless steel
Spring 316 stainless steel Poppet 316 stainless steel
O-Ring Viton (Std)
Seal retainer 316 stainless steel
Lock screw 316 stainless steel
Adjusting screw 316 stainless steel
Valve connections
NPT ANSI/ASME
B1-20.1
BSPT BS21
BSP BS2779
Valve markings
Make or manufacturer Waverley Operating limits 6000psi
Direction arrow
Cast code ABC
Deflector cap
Ordering
Thread Size Part No
1/4″ NPT 2N MCV
1/2″ NPT 4N MCV
1/4″ NPT 2N ACV
Springs
Spring material is 304 Stainless Steel as standard. 316 Stainless Steel available as an option. Please specify on order.
Testing
Waverley check valves have been tested for sealing performance based on BS 6755 Pt1. These tests consist of: Low pressure (50psi 3.5 bar) High pressure shell (9,000psi 620 bar).
Seal kits
Seal kits are supplied for necessary maintenance and consist of poppet O-ring seal
Cleaning and packaging
All check valves are dispatched fully degreased and sealed. Cleaning for oxygen use on application.