- excess flow check valve
- 溢: overflow; spill
- 止回阀: check valve; check-valve mou ...
- 截流止回阀: stop-check valve
- 节流止回阀: throttling non return valve
- 止回阀: [工业] check valve; check-valve mounting bracket; one-way valve; clack valve; clappet (valve); inverted valve; non-return flap valve; non-return valve; return flow prevention valve
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