CV Series

In-line check valves

Construction ApplicationsTools ApplicationsIndustrial ApplicationsAgricultural Applications

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 TechSpeciality Coupling
Carbon Steel Trivalent Materials

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

  • General hydraulic systems,
  • Machine tools
  • Test equipment 
  • Agricultural
  • Mobile hydraulics


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.

106°C 223°F

Nitrile

120°C 248°F

EPDM

200°C 392°F

Viton®

300°C 572°F

Kalrez®

-20°C -4°F

Viton®

-25°C -13°F

Kalrez®

-40°C -40°F

Nitrile

-50°C -58°F

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)