ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
REVERSE OSMOSIS SYSTEM
RO Product Flow Three-Way Valves V-501 through V-510 Replacement:
Parts (TM 10-4610-309-24P):
RO Product Flow Three-Way Valve
Hose, 1/2" ID x 3/4" OD, Black Reinforced PVC, Bulk
Material:
Tape, antiseizing (WP 0079, Table 1, item 43)
Equipment Condition:
TWPS in Standby Shutdown With Drain-Down
Army: TWPS main breaker off
Marine Corps: TWPS disconnected from power source
Replace any of the RO Product Flow Three-way Valves V-501 through V-510 as follows (see Figure 8):
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
removing or installing any of the RO Product Flow Three-Way Valves V-501
through V-510. Failure to observe this warning can result in injury or damage to
equipment.
1. Remove the three-way valve as follows:
a. Make sure the TWPS is in Standby Shutdown With Drain-Down.
b. Loosen the hose clamps and remove the hoses from the sample and product outlet ports
of the three-way valve. It may be necessary to cut the black product outlet hose to
remove it from the hose barb.
c. Unscrew the valve from the RO vessel product water outlet pipe.
d. Unscrew the hose barbs from the sample and product outlet ports of the three-way valve.
e. Discard the valve.
RO VESSEL PRODUCT OUTPUT PIPE
HOSE BARB
HOSE BARB
HOSE CLAMP
HOSE CLAMP
PRODUCT HOSE
SAMPLE/DRAIN HOSE
3-WAY VALVE
Figure 8. RO Product Three-Way Valve Replacement.
2. Install the new three-way valve as follows:
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