Installation, Operation & Maintenance Manual
18
Top-Transfer 2" Angle Valves A-720, A-721, A-721-B and A-724 Series
6.1.8
Raise the stem (item 2) up in the body as far as it will go. It now is possible to take the gasket retainer out of the valve.
Needle-nose pliers may be helpful in gripping the gasket retainer to extract it through the side port opening.
6.1.9
Take a 7/16” socket wrench and unscrew the nuts. Using a block of steel that spans both sides of the U-bolt (about 1” wide),
tap the block to loosen the U-bolt and push it out about 1/4". Open the handwheel again and rotate the gasket retainer 180°,
then tighten down on the handwheel to put tension on the gasket retainer. Then use a tool to pull the U-bolt out.
6.1.10
The packing gland (item 11) can now be pulled out of the body with the standard packing tools.
6.1.11
Loosen or remove the packing locknut (see step number 6.1.9). Turn the handwheel to lower or raise the stem as far as it will
go. Then take off the handwheel nut, washer, and handwheel. Gripping on the flats of the stem square with an open-end
wrench or vise grips continue to unwind the stem down. If the stem cannot be taken out the last few threads by hand, it may
be necessary to lightly grip the bottom of the stem with vise grips to disengage it from the body.
6.1.12
Remove the packing top washer, coil spring and bottom space through the top of the valve.
Figure 6-9 Loosen locknut and remove packing
Packing Locknut
Packing Gland
Figure 6-7 Remove retainer
Retainer
Figure 6-8 Remove packing gland
