ZQDX3系列部分回转型阀门手动装置，该产品是一种90°回转型驱动装置,适用于球阀、旋塞阀等类阀门。产品共有4个型号。该产品的蜗杆加长式适用于手轮会碰到阀体的阀门，手轮采用焊接加长式输出力矩大。

ZQDX3 series partial transition valve manual device, the product is a 90° transition drive device, suitable for ball valves, plug valves and other valves. The product has 4 models. The worm extension type of the product is suitable for the valve where the handwheel will encounter the valve body. The handwheel adopts welding extension type with large output torque.