The causes for the leakage of pneumatic valve packing and solution

the causes for the leakage of pneumatic valve packing and packing solution
pneumatic valve leakage failure phenomenon, the analysis of the causes of pneumatic valve packing leaking:
( Packing quality.
( Flange bending, no pressure.
( Pneumatic valve is not open, make packing stress.
( Pneumatic valve pneumatic valve rod finish is unqualified.

pneumatic valve packing method of eliminating leak:
( Choose qualified packing quality.
( Pneumatic valve repair plus packing, pneumatic valve should be opened.
( Check the pneumatic valve rod finish, check the flange flatness.

prevention measures: strictly according to the process steps, strengthen patrol.
security considerations:
do isolation measures; To prevent steam, water, avoid personal and equipment damage.