TM 10-4320-345-13
4-27. PRESSURE REGULATING VALVE REPAIR - cont.
NOTE
Disassemble piping only to the extent required to replace defective component(s).
Disassemble Inlet. Piping Refer to figure 4-18.
(6)
Disconnect both ends of line (1) and remove from valve (24).
(7)
Disconnect both ends of line (2) and remove from pressure regulating valve (24).
(8)
Unscrew connector (3) from valve (4).
(9)
Turn handle of valve (4) in line with valve body (open position).
(10)
Unscrew valve (4) from 1-inch nipple (5).
(11)
Unscrew 1-inch nipple (5), elbow (6),2-inch nipple (7) and strainer (8) from pressure regulating
valve (24).
Disassemble Outlet Piping. Refer to figure 4-18.
(12)
Unscrew elbow (9) andrestrictor (10) from tee (11).
(13)
Unscrew 1-inch nipple (12) and regulating valve (13) from 3-inch nipple (14).
(14)
Turn handle of valve (15) in line with valve body (open position).
(15)
Unscrew 3-inch nipple (14), valve (15), and 2 1/2-inch nipple (16) from elbow (17).
(16)
Unscrew elbow (17), 1 1/2 inch nipple (18) and bushing (19) from pressure regulating
valve (24).
Disassemble Bypass Piping. Refer to figure 4-18.
(17)
Turn handle of valve (21) in line with valve body (open position).
(18)
Unscrew elbow (20) and valve (21) from I-inch nipple (22).
(19)
Unscrew 1-inch nipple (22) and bushing (23) from pressure regulating valve (24).
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