Eccentric hemisphere ball valve work environment are generally more severe, so failure is when something happens, especially to replace the packing. Replacing be packing online believe that many users can operate their own, then replace the packing line, how should it work? Let me give you a simple explanation below:
(1) Turn off the eccentric hemisphere ball valve, block valve downstream deflated before removing the pressure valve in the pipeline.
(2) The eccentric hemisphere ball valve is completely closed.
(3) Twist off nut, remove the washer, wrench head and handle.
(4) Twist off nut, remove the spring washer, stem stopper and packing gland.
(5)Remove the packing for the eccentric hemisphere ball valve.
(6) Check the removed parts, if any damage to be repaired or replaced, each of the parts in clean water.
(7) Scrub and lubricating stuffing box sealing surface for the eccentric hemisphere ball valve.
(8) Into the new filler for the eccentric hemisphere ball valve.
(9) By decomposition of the inverse order of loading on the packing gland, stem stopper, spring washer, nut fastening the parts.
(10) And then loaded on the wrench head and handle, with a washer, nut fastening.
(11)Operating handle checks eccentric hemisphere ball valve open and close flexibility.
(12)Tightness test for the eccentric hemisphere ball valve.
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