ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0002 00
DESCRIPTION AND THEORY OF OPERATION
EQUIPMENT DESCRIPTION AND DATA
RO System: RO Vessels to Waste Out (see Figure 16)
RO Vessel Drain Valve V-408. Used to drain water out of the RO vessels.
RO Reject Pressure Gage PI-401. This pressure gage is located in the reject line between
pressure control valve HCV-401 and the turbocharger. The gage indicates the reject pressure in
the line from the RO vessel ROV-5 reject outlet to the turbocharger.
Main Pressure Control Valve HCV-401 and Auxiliary Pressure Control Valve HCV-401A.
Enables the operator to control the pressure boost that the turbocharger delivers to the RO feed
by adjusting how much of the reject flow from the RO vessels is bypassed around the
turbocharger directly to waste.
Reject Check Valve V-411. Prevents waste water from backing up into the RO system
especially during backwash surges.
Figure 16. It is located in the instrument/solenoid panel box shown in Figure 23). FE-401 and
FT-401 measure the reject flow. Reject flow is displayed at the operator control panel (OCP).
RO REJECT FLOW
TURBOCHARGER BYPASS
ELEMENT FE-401
TURBOCHARGER
REJECT
CHECK VALVE
V-411
TO
WASTE OUT
MAIN PRESSURE
CONTROL VALVE
WASTE OUT
REJECT OUT
HCV-401
AUXILIARY PRESSURE
CONTROL VALVE HCV-401A
RO VESSEL DRAIN VALVE V-408
RO REJECT PRESSURE GAUGE PI-401
Figure 16. RO System: RO Vessels to Waste Out.
0002 00-15
