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Weihai Zhonghao Pneumatic Hydraulic Co., Ltd.

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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.

pneumatic tool accessories

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Product News

drilling accessories rig QF502D 4+4 Gear Pneumatic Switch

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drilling rig accessories

pneumatic tool accessories

drilling accessories rig

oil rigs valve QF501C Four-Way Pneumatic Switch for Oilfield Equipment

The QF501C four-way air switch is a handle-operated rotary valve, primarily composed of a slide plate, valve seat (valve body), rotating shaft, handle assembly, spring, sealing elements, and valve cover.

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pneumatic tool accessories

High-pressure

oil rigs valve Air Source Three-Unit Model Drilling Production Accessories

If you require our products and services, please feel free to contact us. Our entire team is dedicated to serving you with the utmost care and professionalism.

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oilfield drilling rig

drilling rig parts

oil rigs valve

drilling truck

pneumatic tool accessories

drilling accessories rig PQ-L10-40 Safety Valve Series drilling rig parts

In pneumatic transmission systems, a safety valve is a device used to prevent damage to pneumatic actuators, equipment, and piping by limiting the maximum pressure in the circuit. When the pneumatic pressure exceeds the maximum allowable limit, the safety valve automatically opens to vent excess air; once the pressure drops below this limit, the valve automatically closes.

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drilling accessories rig

drilling valves

oil field valve

pneumatic tool accessories