VTop Control Valves
M/VTOP-M/E ed. 01 2020
3.12.2 – PACKING REPLACEMENT
ATTENTION
IF THE VALVE IS FITTED WITH A SOFT SEAL, CONSIDERING THE COMPLEXITY OF THE OPERATIONS FOR
PACKING AND BELLOWS REPLACEMENT, YOU ARE ADVISED TO CONTACT OUR SUPPORT SERVICE.
The operation to replace the packing involves dismantling the lock on the trim+servomotor.
For valves
20VT EP
, Fig. “20VT EP” –
50VT EP
, Fig. ”50VT EP” proceed as follows:
unscrew the locking nuts ref. 12 that tighten the bonnet ref. 9, at the same time remove the overall actuator with the
bonnet and trim connected and then proceed as follows:
unscrew the nuts ref. 17, unscrew and remove the entire stem ref. 7, unscrew the packing bush ref. 16,with a hooked
iron tool gently extract the packing rings ref. 15, the packing washer ref. 13, the packing spring ref. 14 , blow and clean
the packing chamber found on the bonnet ref. 9.
When the packing is changed, the body gasket must also be changed, see 3.4.1
Then proceed to assemble the new packing following the previous operations in the reverse order, see Fig. “PACKING”.
“20VT EP”
“50VT EP”
Fig. “PACKING”
