TM 5-4320-218-15
1 Bonnet
8 Bonnet stem
2 Wheel nut
9 Disk stem
3 Handwheel
10 Male disk
4 Packing nut
11 Female disk
5 Gland spring
12 Gasket
6 Packing gland
13 Body
7 Packing
14 Bonnet screw
Figure 35. Gate valves, 4-inch, exploded view.
(2) Inspect the body for cracks and
age. Replace a worn or damaged disk.
breaks. Inspect the valve seats for
(4) Inspect the valve stem to see if it is
pitting, grooves, cracks, and excessive
bent or the threads are damaged.
wear. Replace a defective valve body.
(5) Discard used gaskets and packing.
If the valve seats are slightly pitted,
Use new gaskets and packing when
p i t s can be removed with emery
reassembling.
cloth. Be sure to clean the surfaces
(6) Replace all worn or damaged assembly
evenly to assure a proper seating of
screws and nuts.
d. Reassembly and installation. Reverse the
the disk.
(3) Inspect the disks for wear and dam-
procedures outlined in a and b above.