Flowserve Cast Flex Wedge Gate Valve - Manual (Page 15)

Cast Flex Wedge Gate Valves FCD ADENIM0010-02
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5.0 VALVE MAINTENANCE
(Continued)
5.4 Packing (Continued)
6. After the valve has been in operation a few days, retighten the packing nuts to compensate for compression of the
packing. At this time, if there is room, it is advisable to add another ring of packing.
7. Remove stem from backseated position so that packing does not dry out.
5.5 Bolting Torque Values
At intervals of not more than six months, check the tightness of all bolting. Bolted bonnet valves should have the
body·bonnet bolting torqued to the values shown below (Table TA-108-2)