Control valve is installed before the test

Before the installation of the control valve inspection include the following:
a. Control valve static characteristics of the test;
b, tightness test;
c. Tightness test, when necessary, reinstall the stuffing box;
d. Leakage test;pneumatic auto drain
e. No-load full stroke time test;
f insulation performance test;
g, compressive strength test.
Before the actual installation, the test must be carried out with the appearance of test, compressive strength test, the start and end points, error, deadband back
, The basic error test, leakage test, no-load full stroke test of time.stainless steel pneumatic cylinders