1results about How to "Reduce operating torque" patented technology

This invention discloses a pressure-balanced composite sealing ball valve, comprising a valve body, a valve stem, a valve core, and a composite sealing structure. The valve body has a fluid channel and a first mounting hole, which communicates with the fluid channel. At least a portion of the valve stem is connected to the interior of the first mounting hole, and the valve stem can be driven to rotate. The valve core is disposed inside the valve body and is movably fitted with the valve stem. The valve stem has a balance hole, and the valve core has a guide hole, which communicates with the guide hole. The composite sealing structure is fitted around the outer circumference of the valve stem and is sealed to the inner wall of the first mounting hole. When the fluid channel is open, fluid enters the first mounting hole, contacts and forces the composite sealing structure to deform axially on the valve stem. This ball valve employs a composite sealing structure, ensuring a good seal between the valve stem and valve body even under high pressure, high-frequency operation, or the penetration of small molecule media. Simultaneously, the balance hole on the valve stem reduces the operating torque of the valve stem.