This is a kind of Screw cartridge direct relief valve from Ningbo Best Hydraulic Components Co., Ltd,specialized in making various Cartridge Valves.
Screw cartridge direct relief valve is a bi-directional frequent open threaded valve with conical sealing. When no pressure in the control port, the valve core is in the open position and fluid can flow in both directions. When there is pressure in the control port, the pressure will fall when the fluid is passing.
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| cartridge relief valve |

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