Installation and maintenance of diaphragm valve
Installation and maintenance of diaphragm valve
① Before installing the diaphragm valve, carefully check whether the operating conditions of the pipeline are consistent with the specified range of use of this valve, and clean the inner cavity to prevent dirt from blocking or damaging the sealing components.The main Diaphragm Valve product names of China Diaphragm Valves Network include:Flange Wedge Fluorine Lined Gate Valve,Fluorine Lined Discharge Stuff Diaphragm Valve,Fluorine Lined Swing Check Valve,Fluorine Lined Visual Handleless CupFluorine Pipe Fittings,GB Reciprocating-type Pneumatic Rubber Lined Diaphragm Valve
② Do not apply grease on the rubber lining layer and rubber diaphragm surface to prevent rubber swelling and affect the service life of the diaphragm valve.
③ Handwheels or transmission mechanisms are not allowed for lifting purposes and collisions are strictly prohibited.
④ When manually operating the diaphragm valve, auxiliary levers should not be used to prevent excessive torque from damaging the driving components or sealing parts.
⑤ Diaphragm valves should be stored in a dry and ventilated room, and stacking is strictly prohibited. The channels at both ends of inventory diaphragm valves must be sealed, and the opening and closing components should be in a slightly open state.
Malfunction and eliminationPossible malfunctions |
reason |
Elimination methods
|
The handwheel operation is not flexible |
① Valve stem bending ② Thread damage |
① Replace the valve stem ② Trim the threads and add lubricant |
Pneumatic diaphragm valve cannot automatically open and close |
① Low gas source pressure ② Excessive spring tightening force ③ Rubber diaphragm damaged |
① Increase the gas supply pressure ② Reduce the tightening force of the spring ③ Replace the diaphragm |
Leakage at the connection between the valve body and the valve cover |
② Loose connecting bolts ② The adhesive layer inside the valve body has ruptured |
① Tighten the connecting bolts ② Replace the valve body |
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