- relief valve setting
- 安全阀: safety valve
- 刻度: graduation; degree scale; ma ...
- 控制阀刻度板: control valve dial plate
- 安全阀: blow through valve; blow valve; blow-through valve; boiler safety valve; clearway valve; dump valve; dumpvalve; emergency relief valve; emergency valve; escape valve; guard valve; lever safety valve; pre ure relief valve; pressure cooker: safety valve; pressure relief valve; protection valve; rebound relief valve; release valve; relief valves; reliefvalves; relieve valve; relieved valve; safety ales; safety cock; safety valves; security valve; sv safety valve; valve， safety
- 安全阀汽包, 安全阀座: safety valve dome
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