Subsea Check Valve Applications

Oliver Valvetek Limited manufactures three sizes of ‘small bore’ subsea check valves, 0.38”[10mm] bore, 0.75”[19mm] bore and1.00”[25mm] bore. The 0.38” bore check valve has an operating pressure rating up to 10,000psi [690bar] and a operating temperature range of 0F[-18C] to +250F[+121C]; whilst the 0.75” and 1” bore designs are up to 15,000psi [1034bar] with an operating temperature range of -20F[-29C] to +350F[+180C].

Poppet Seal

The poppet seal for the 0.38" check valve is a fully encapsulated FKM o-ring, whilst in the 0.75" and 1" designed the seal is a fully encapsulated Peek labyrinth ring.

Springs

A range of springs has been designed to provide different cracking pressures and can be provided in a range of materials such as 316SS, X750 and Elgiloy.

Combination Check Valves

The check valves have been designed to be incorporated in a range of different body configurations. For example, integral within a gate valve for a chemical injection application; or as a twin check valve for a hydraulic control system.

Traceability of Materials

All the components within an Oliver subsea check valve have material traceability. The complete check valves are individually serialised and are provided with material and pressure test certificates to BS EN 10204 3.1 as standard, 3.2 optional