Double-valve pair check valve, simple structure, quick return action, good sealing performance, convenient installation, no space limitation, small size and convenient maintenance. It has a wide range of applications: water, oil, steam, acid and alkaline liquids can be used to achieve automatic checkback.

Second, product technical parameters:

Nominal diameter: 2 inches - 18 inches

Nominal pressure: 150LB, 300LB, 600LB, 900LB, 1500LB

Body material: WCB, LCB, CF8M, CF8, CF3M, CF3, etc.

Structure length standard: API6D, API594, DIN3202

Connection standard: ASME B 16.47B, MSS SP-4

Inspection standard: API6D, API598