Handle Butterfly Valve and Worm Wheel Butterfly Valve are the manual operation of the valve, commonly known as Manual Butterfly Valve, but there are differences in their use.
1. Handle butterfly valve handle rod direct drive valve plate, switch quickly, but labor. Worm wheel butterfly valve through worm wheel drive valve plate, switch slow but labor-saving. Therefore, when the pressure in the pipeline, the choice of handle butterfly valve will be particularly difficult, General Valve recommended that you choose worm butterfly valve.
2. The butterfly valve commonly used in engineering is worm wheel butterfly valve, because in addition to labor-saving, its sealing performance is also better than handle butterfly valve, especially in the environment of high switching frequency, the service life of worm wheel butterfly valve will be higher than handle butterfly valve.
3. Handle butterfly valve is generally small diameter (DN200 less) to use more, because the general small diameter butterfly valve torque is smaller, can be opened and closed directly by hand, and worm gear box drive stem rotation, more labor-saving.
Selection Principle Of Handle Drive And Worm Wheel Drive
The gearbox is used when the stem torque is greater than 300n m and the handle is used for the rest.
Post time: Nov-25-2021