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
2. Install the new vacuum breaker as follows:
a. Position the new vacuum breaker with the disk pointing upstream toward the fixed pipe
and the spring pointing downstream toward the removable pipe.
b. Secure the new vacuum breaker, the fixed pipe, the gasket, and the removable pipe
together using the sanitary clamp.
Product Check Valve V-512 Replacement:
Parts (TM 10-4610-309-24P):
Product Check Valve V-512
1-1/2 in. Sanitary Clamp Gasket
Equipment Condition:
TWPS in Standby Shutdown Without Draining Down
Army: TWPS main breaker off
Marine Corps: TWPS disconnected from power source
Replace Product Check Valve V-512 as follows (see Figure 11):
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 Check Valve V-512. Failure to observe this warning can
result in injury or damage to equipment.
1. Remove Product Check Valve V-512 as follows:
a. Open Product Utility Valve V-511 to drain the product line.
b. Loosen the pipe clamp holding the product pipe downstream of the check valve (not
shown in Figure).
c. Remove the sanitary clamps on both sides of Product Check Valve V-512.
d. Slide the pipe section toward the outlet to gain clearance and remove the check valve.
e. Inspect the 1-1/2 in. diameter sanitary clamp gaskets for damage or deterioration and
replace if needed.
CHECK VALVE
APPROXIMATE LOCATION
SANITARY CLAMP
OF PIPE CLAMP
GASKET
PRODUCT UTILITY VALVE V-511
SPRING END
DISK END OF VALVE
OF VALVE
Figure 11. Product Check Valve V-512 Replacement.
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