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American standard pair of double-valve check valves
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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
