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
The Pressure Recovery Turbocharger PRT-1 consists of a pump and a turbine connected together on a
common shaft within a common casing (see Figure 11). RO feed water from the HP pumps is received
at the turbocharger pump inlet. The turbocharger pump boosts the water pressure and discharges to the
RO vessels. RO reject from the RO vessels passes through the turbocharger turbine. Pressure energy
from the RO reject water is transferred from the turbocharger turbine to the turbocharger pump through
the common shaft.
RO Feed Pressure Transmitter PT-302 provides RO feed pressure (pressure to the RO vessels) display
at the OCP and a high-pressure alarm if the pressure exceeds 1225 psig. RO Feed Pressure Gauge PI-
304 provides a direct alternative reading of the pressure.
RO Feed Pressure Relief Valve RV-302, set at 1250 psig, protects the RO vessels from over pressure
and Air Purge Valve V-913 is opened to purge water or cleaning solution from the RO system.
RO VESSEL
RO FEED PRESSURE
RO FEED PRESSURE
GAUGE PI-304
RELIEF VALVE RV-302
RO FEED PRESSURE
TRANSMITTER PT-302
PRT-1 FEED WATER
DISCHARGE
TURBOCHARGER
AIR PURGE VALVE
PRT-1
V-913
PRT-1 FEED WATER INLET
HPP PRESSURE
RELIEF VALVE
RV-301
HPP DISCHARGE PRESSURE GAUGE PI-301
HPP OUTLET
HPP OUTLET DRAIN VALVE V-301
Figure 11. RO System: High Pressure Pumps to RO Vessels.
0003 00-14
