ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
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DESCRIPTION AND THEORY OF OPERATION
THEORY OF OPERATION
Antiscalant is injected into the RO feed water just after if discharges from the RO feed pump and before it
reaches the HP pumps (see Figure 9).
Calcium hypochlorite is injected into the product water just after Check Valve V-512 and before the
product water enters the distribution tanks (see Figure 14). When the NBC System is deployed, the
calcium hypochlorite is injected in the product water after it discharges from the NBC tank and before the
product water enters the distribution tanks (see Figure 26). This is accomplished by disconnecting the
normal operation discharge tube and connecting the NBC discharge tube, that is then connected to the
outlet of the NBC filter.
STANDARD PRODUCT WATER DISTRIBUTION SYSTEM
The standard distribution system stores potable product water in two 3000-gallon self-supporting fabric
Storage Tanks T-3 and T-4 (see Figure 25). The tanks are connected together using Adapter A-07 and
one two-in. diameter, five-ft. long suction hose at the lower output side of the storage tanks. A two-in.
diameter, five-ft. suction hose connects from the adapter to Electric Motor-Driven Pump P-7. Product
water is delivered to the inlet of one of the tanks through the 1-in. diameter suction hoses connected to
the tank by Adaptor A-15. Pump P-7 draws the product water from the storage tank outlets and
discharges it through Adaptor A-08 and two 2-in. diameter, 65-ft. long discharge hoses to two distribution
Nozzles V-523A and V523B. A 5/8-in. x 50-ft. Auxiliary Hose and Valve V-522 can be connected to pump
outlet Adapter A-08 in place of one of the distribution hoses to provide water back to the TWPS for MF
and RO cleaning and general purpose potable water use. The distribution system provides up to 125
gpm total distribution capacity through the two distribution nozzles. The raw water pumps and the
distribution pump are interchangeable by changing the pump suction fittings.
NOZZLE V-523B
EXTENDED DISTRIBUTI0N SYSTEM
DIESEL ENGINE-
2 X 65 D-HOSE
5/8 X 50 AUXILIARY HOSE
DRIVEN PUMP P-8
ADAPTOR A-15
ADAPTOR
STORAGE
A-08
TANK T-5
STORAGE
STORAGE
ELECTRIC MOTOR-
TANK T-7
TANK T-6
DRIVEN PUMP P-7
AUXILIARY HOSE
VALVE V-522
2 X 5 S-HOSE
2 X 65 D-HOSE
STORAGE TANK T-4
ADAPTOR A-07
STORAGE TANK
2 X 5 S-HOSE
T-3
ADAPTOR A-15
ADAPTOR A-07
1 X 10 S-HOSE
Figure 25. Product Water and Extended Product Water Distribution Systems.
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