单向节流阀 one-way restrictive valve ; one-way throttle valve ; return orifice check valve ; one way restrictor

双单向节流阀 Double throttle check valve ; Valve ; Doublethrottlecheckvalve

叠加式单向节流阀 stacked unidirectional throttle valve ; MT ; stacked double directional throttle valve ; ModularThrottleAnd check valve

系列单向节流阀 KLA ; KLJA-S

叠式单向节流阀 MTCV

油流单向阀 oil flow check valve

逆流单向阀 reverse flow check valve

量孔节流单向阀 orifice check valve

流量单向阀 flow check valve