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Hoke 691F Series Check valves

Hoke 691F Series Check valves are designed to meet the requirements of a wide range of industrial applications severe service, CNG applications. The key features of the Hoke 691F Series Check valves are prevents back flow, protects valuable equipment, leak-free, reusable connections.

General info 
Brand Hoke
Design RatingMinMax
Process media temp °C -54135
Process media temp °F -65275
Pressure Barg 345
Pressure PSI 5000
Set/cracking/outlet control pressure Barg 0.023.5
Set/cracking/outlet control pressure PSIG 0.3350
Material of construction 316/316L Stainless Steel
Process Connection Type Tube Fitting
Size 10 mm - 25 mm
1/4 inch - 1 inch
Seat material 316/316L Stainless Steel
Seal material NBR Nitrile (Buna-N)
Applications severe service, CNG applications