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CV Series
Download DatasheetIn-line check valves
Holmbury’s CV Series in-line check valves are designed to suit a wide range of applications. The CV Series check valve allows flow in one direction and blocks it in the opposite direction. The flow is only allowed once a pre-set cracking pressure is reached.
Speciality Coupling
Features
- Various cracking pressures are available
- Single directional flow
- Bleed hole can be provided to allow gradual dissipation of the pressure in the hydraulic circuit beyond the check once the primary valve is opened to tank
Accessories
Not applicable
Construction
- Carbon steel with trivalent plating
- Metal to metal sealing
- Also available in AISI 316 stainless steel (See CVS Series)
Applications
• Construction• Mobile Hydraulics• Test Equipment• Machine Tools• General Hydraulics• Agricultural
AVAILABLE SEALS AND TEMPERATURE RANGE
All carbon steel products have Nitrile Butadiene Rubber seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) seals fitted as standard. Special seal materials available on request.
0°
Nitrile
EPDM
Viton®
Kalrez®
0°
Viton®
Kalrez®
Nitrile
EPDM
| Abbreviation | Trade Name | Chemical Name | Min Temp. | Max Temp. |
| NBR XNBR | Chemigum®, Hycar8, Breon®, Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol® | Nitrile Butadiene Rubber Carboxylated Nitrile Rubber | -40°C (-40°F) | 106°C (223°F) |
| FKM (FPM) | Dai-el®, Fluorel®, Tecnoflon®, Viton® | Fluoro-elastomer Rubber | -20°C (-4°F) | 200°C (392°F) |
| EPR EPDM | Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM® | Ethylene Propylene Copolymer Ethylene Propylene Terpolymer | -50°C (-58°F) | 120°C (248°F) |
| FVMQ | Silastic 1S®, FSE® | Fluorosilicone Rubber | -65°C (-85°F) | 170°C (338°F) |
| FFKM | Perlast®, Kalrez®, Chemraz®, Kaflon® | Perfluoroelastomer | -25°C (-13°F) | 300°C (572°F) |