A locking ball valve packing at

Packing at the micro vent need to tighten the stem nut. Note: Do not lock tight, usually 1/4 turn lock to
1 lap, leaking stops.
2), the replacement of the valve seat and seals
A) Removal
The valve in a semi-open position, washed to remove the valve body inside and outside the hazardous substances that may be present.
Close the valve and disconnect the connection on both sides of the flange bolts and nuts, and then completely remove the valve from the pipeline
.
The order to remove the drive device - the implementing agencies, bracket, lock washer, stem nut, butterfly shrapnel,
Glam, wear-resistant film, stem packing.
Removing the body cover connecting bolts and nuts, valve cover and valve body separation, and remove the valve cover gasket.
Recognized ball valve in the "off" position, it can be easier taken out from the valve body, and then remove the seat
.
Nudge stem from the valve body in the hole down until it is completely removed, and then remove the O-ring and stem packing.
Note: Be careful to avoid scratch the stem surface and the valve stuffing box sealing parts.
B), reassembly
Cleaning and inspection remove the parts, it is strongly recommended spare parts package to replace the valve seat and valve cover gasket seal
Pieces.
direct acting solenoid valve
Assembled in the reverse order of removal.
With a predetermined torque, the cross-locking flange connecting bolts.
Specified torque, tighten the stem nut.
Implementing agencies is installed, enter the appropriate signal drive spool rotation by rotating the valve stem, the valve to fight
Open and closed positions.
If possible, before back to the installed pipeline, according to relevant standards valve pressure seal testing and performance testing

stainless steel pneumatic cylinders