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锻钢止回阀 Forged steel check valve H11H/Y、H61H/Y
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锻钢止回阀 Forged steel check valve H41H/Y、H44H/Y
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美标旋启式法兰止回阀 API Swing flanged check valve H44H/Y/W
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美标对夹升降式止回阀 API Wafer type piston lift check valve H72H/Y/W
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国标对夹升降式止回阀 GB Wafer type piston lift check valve H72H/Y/W
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美标对夹双瓣旋启式止回阀 API Wafer type double disc Swing check valve H76H/Y/W
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国标对夹双瓣旋启式止回阀 GB Wafer type double disc Swing check valve H76H/Y/W
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升降式法兰止回阀 GB Lift flanged check valve H41H/Y/W
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旋启式法兰止回阀 Swing flanged check valve H44H/Y/W
