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    Pneumatic and hydraulic component manufacturer and supplier

    We specialize in seven major product lines, including pneumatic valves for petroleum machinery, air-source treatment components, control components, actuating components, auxiliary components, pneumatic tools, and hydraulic components—totaling over 1,000 varieties.

    qf501a

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    oil equipment parts oil valve QF501A Two-Port Pneumatic Valve


    The QF501A two-way air switch is a handle-operated rotary valve, primarily composed of a slide-valve seat (valve body), a rotating shaft, a handle assembly, a spring, sealing elements, and a valve cover.