Flowserve Cast Flex Wedge Gate Valve - Manual (Page 22)

Cast Flex Wedge Gate Valves FCD ADENIM0010-02
22
6.0 DISASSEMBLY
(Continued)
6.2
Flanged Bonnet Valves
6.2.1 Yoke: (Fig. 11)
Unbolt the capscrews (217) holding the yoke (011) to the bonnet (002). NOTE: If the valve is to be disassembled,
open the valve slightly before doing this. The yoke may now be lifted off the bonnet.
6.2.2 Bonnet: (Fig. 12)
Unscrew the gland nuts (234), remove the gland flange (130), gland (107) and pullout the packing. Now remove the
nuts (230) from the bonnet studs (200). If the bonnet is too heavy to lift by hand, utilize a hoist with choker around the
bonnet neck or two eye-bolts in the yoke bolt holes. Lift the bonnet clear of the valve body and stem. Remove the
spiral-wound gasket (100) from its groove. This operation may require the use of a screwdriver or similar tool to pry
the gasket from the groove. Be careful not to scratch the gasket seating surfaces.
Figure 12