API Check Valve

High integrity valves preventing backflow of drilling products. The valve contains a mechanism to permit fluid to flow freely in one direction while automatically preventing flow in the opposite direction.

API size designations

1 13⁄16,
2 1⁄16,
2 9⁄16,
3 1⁄16,
4 1⁄16,
5 1⁄8

Pressure ratings

5,000psi, 10,000psi, 15,000psi, 20,000psi

Product specification level (PSL)

PSL 1, 2, 3, 3G, 4 available

Temperature ratings

P to U as standard (-29°C to 121°C) . Elevated temperature classes X (180°C) and Y (345°C) also available.

Flange inlay

Stainless or inconel inlays to RTJ grooves available