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: High Pressure Pumps to RO Vessels (see Figure 15)
HPP Outlet Drain Valve V-301. Used to drain the HPP outlet hoses and pipe.
HPP Discharge Pressure Gauge PI-301. Indicates the HP pump discharge pressure.
HP pumps from over pressure in excess of 1050 psig.
HPP Outlet Drain Valve V-302. Used to drain high pressure pump outlet hoses and piping.
Pressure Recovery Turbocharger PRT-1. Uses pressure energy from the reject water coming
out of the RO vessels to boost the pressure of the RO feed water going into the RO vessels.
Turbocharger Feed Drain Valve V-303. Used to drain the feed water from the turbocharger.
Turbocharger Reject Drain Valve V-410. Used to drain the reject water from the turbocharger.
Feed Piping Drain Valve V-304. Used to drain the feed piping going to RO Vessel #1 and other
pipes that are part of the chemical cleaning system.
vessels that is displayed at the operator control panel (OCP). If the pressure exceeds 1225 psig,
a high-pressure alarm sounds.
RO Feed Pressure Gauge PI-304. Provides a direct reading of the RO feed pressure.
RO Feed Pressure Relief Valve RV-302. Rated to withstand up to 1250 psig. Protects the RO
vessels from over pressure in excess of 1250 psig.
Air Purge Valve V-913. After an air hose is connected from the air system to Air Purge Valve V-
913, the purge valve is opened so that air can be used to purge water or cleaning solution from
the RO system.
RO Vessels ROV-1 through ROV-5. Each vessel contains two RO filter membrane elements.
Feed water flows through each of the vessels in series. A portion of the feed water passes
through the RO membrane within each element. The RO membranes reject most of the salt
producing potable product water. Product water exits the RO element at both ends of the each
vessel and flows to a header. The feed water that does not pass through the membranes is
concentrated with salt and is discharged from the last vessel as reject water.
RO FEED PRESSURE RELIEF
RO FEED PRESSURE
ROV-1
VALVE RV-302
GAUGE PI-304
ROV-2
AIR PURGE VALVE
RO FEED PRESSURE
V-913
TRANSMITTER PT-302
ROV-3
ROV-4
HPP OUTLET DRAIN
ROV-5
VALVE V-302
FEED PIPING
DRAIN VALVE V-304
TURBOCHARGER FEED DRAIN VALVE V-303
HPP OUTLET
HPP DISCHARGE
PRESSURE RELIEF
TURBOCHARGER REJECT DRAIN VALVE V-410
PRESSURE GAUGE
VALVE RV-301
PI-301
PRESSURE RECOVERY TURBOCHARGER PRT-1
HPP OUTLET DRAIN VALVE V-301
HPP OUTLET
Figure 15. RO System: High Pressure Pumps to RO Vessels.
0002 00-14
