ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0055 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
AIR SYSTEM, REDUCED PRESSURE
c.
Apply antiseizing tape to both ends of the close nipples and the threaded end of the
reducer bushing.
d. Thread the 3/4-in. close nipple into the cross tee connection.
5. Install the new pressure regulating valve onto the Air System Section 3 assembly as follows:
a. Thread the input side of the new pressure-regulating valve onto the 3/4-in close nipple at
the cross tee connection. Do not over-tighten.
b. Make sure that the position of the new pressure-regulating valve matches that shown in
Figure 4.
c. Thread the pipe union half, 1/2-in. close nipple, and the reducer bushing together.
d. Thread the reducer bushing into the other end of the new pressure-regulating valve and
tighten.
e. Thread the part of the Section 3 assembly that contains Pressure Gauge PI-903 onto the
pipe union on the pressure regulating valve.
f. Make sure the position of all components match Figure 4.
6. Install the Air System Section 3 assembly onto the TWPS. Refer to REPLACE and Air System
Section 3 Assembly.
7. Check the new pressure regulating valve and attached piping for leaks.
Pressure Gauge PI-903, 0-30 psig Replacement:
Parts:
Pressure Gauge PI-903 (TM 10-4610-309-24P)
Material:
Tape, antiseizing (WP 0079, Table 1, item 43, 44)
Equipment Condition:
TWPS in Standby Shutdown Without Draining Down
Army: Generator off and TWPS main breaker off
Marine Corps: TWPS disconnected from power source
Entire air system bled down
WARNING
The TWPS must be in Shutdown and the TQG and TWPS main breaker must be off
(Army) or the TWPS disconnected from its power source (Marine Corps) prior to
performing maintenance on the TWPS Air System. Failure to observe this warning
can result in injury to personnel and damage to equipment.
High pressure. The air system contains air pressure up to 1800 psig. The air
system must be bled prior to performing maintenance on components of the air
system. Failure to observe this warning can result in injury to personnel and
damage to equipment.
NOTE
The pressure gauge PI-903 can be replaced with out removing the air system 100
and 15 psig MF backwash components from the TWPS.
055 00-8
