ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0003 00
DESCRIPTION AND THEORY OF OPERATION
THEORY OF OPERATION
RO FEED
RO FEED PRESSURE GAUGE PI-202
TEMPERATURE
PRESSURE TRANSMITTER PT-201
INDICATOR TI-202
HPP FEED VALVE V-212
RO FEED TANK T-2
STRAINER S-4
TANK
ANTISCALANT
S-4 DRAIN VALVE V-213
HEATERS
INJECTION CHECK
H-1 H-2
STRAINER S-3
VALVE V-623
LEVEL TRANSMITTER
LT-201
RO FEED TANK
RO FEED TANK AUXILIARY DRAIN VALVE V-210
MAIN DRAIN
VALVE V-412
RO FEED PUMP P-4
HIGH PRESSURE PUMP INLET CONNECTION FLANGES
Figure 9. RO System: RO Feed Tank to High Pressure Pump Inlets.
Two High Pressure Pumps (HPP) P-5 and P-6 provide the operating pressure required by the RO
elements to produce the desired product water flow (see Figure 10). A portion of the feed water to the
pumps acts as a lubricant and is discharged at low pressure back to the RO feed tank near the pumps.
HPP Discharge Pressure Gauge PI-301 shows the High Pressure Pump discharge pressure. HPP Outlet
Pressure Relief Valve RV-301, set at 1050 psig, protects the HP pumps from over pressure.
HIGH PRESSURE PUMPS
P-5
P-6
HPP LUBRICANT RETURN LINE
DISCHARGE TO
TURBOCHARGER
HPP OUTLET PRESSURE
RELIEF VALVE RV-301
HPP INLET
HPP OUTLET
HPP DISCHARGE PRESSURE GAUGE PI-301
Figure 10. RO System: High Pressure Pumps.
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