Butterfly valve and butterfly valve hand wheel common fault causes and elimination of butterfly valve seal surface leakage:
1. The sphenoid plate and the seal face have sundries
2. The closed position of the butterfly plate and the seal face is inconsistent
3. The force of the flange bolt in the outlet side is not equal or not according to the requirement of the drawing
4. The direction of test pressure is not required according to the figure one
Elimination methods:
1. Eliminate impurities and clean the inner cavity of the valve
2. Adjust the adjusting screw of the worm wheel or electric actuator to reach the correct closing position of the valve
3. Check the flanged plane and the bolt pressure state and should be compacted evenly.
4. Pressure in the direction of the head seal
The valve of the butterfly valve hand wheel is leaked at both ends of the valve.
1. Failure of sealed gaskets on both sides
2. Unequal or uncompacted pipe flanges
3. Failure of sealing gasket and sealing gasket
Elimination methods:
1. Replace the seal gasket
2, compress the flange bolt (uniform force)
3, unload the valve's ring, replace the sealing ring, the failure gasket
Hangzhou Xiaoshan Chuangye Metal Processing Factory
Add:Zixia Village, Xintang Street, Xiaoshan District, Hangzhou City, Zhejiang Province, China
Contact us:Yali Yu
Tel:86-571-82793342
Fax:86-571-82778852
Mobile:86-13967182887
E-mail:hzxscyhdc@126.com
