TM 10-4610-241-24
TO 40W4-13-42
2-45.
3-WAY BALL VALVE (BACKWASH) REPAIR (Models WPES-10, WPES-20 and
WPES-30) - continued.
(5)
Position scats (40 and 41) on end caps (35 and 36). Be sure concave side of seats (see
crossection) point toward hall (39).
(6)
Position gaskets (37 and 38) on valve body (42).
(7)
Position end caps (35 and 36) on valve body (42) and install bolts (34), lockwashers (33)
and nuts (32) . Tighten nuts until lockwashers just start to compress.
(8)
Verify position of ball (39) in housing (step 2 above) and torque 3-way valve assembly as
follows:
(a)
Tighten nuts (32) 1/4 turn in illustrated torque pattern.
(b)
Position torque wrench on nut (1) and turn wrench clockwise while viewing needle
on torque wrench.
If torque wrench indicates 14-20 Ibs ft when stem (28) starts turning (breakaway
torque), valve is torqucd correctly.
If torque wrench indicates less than 14-20 Ibs ft when stem (28) starts turning,
repeat steps (a) and (b) above until correct torque of 14-20 Ibs ft is acheived.
(9)
Visually verify that ball (39) is still in correct position (step 2 above). If not, turn as
required
Change 1 2-187
