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
Air System: Section 1, Air Receiver Tank R-1, and Pressure Switch PSL/PSH-901 (see Figure 19)
Pressure Maintaining Valve V-905. Maintains approximately 1800 psig in the system between
the compressor and itself to ensure proper loading of the compressor cylinder valves.
Check Valve V-906. Maintains pressure to the input side of Pressure Regulating Valve PRV-
901.
Air Receiver Tank R-1. Provides a supply of clean, dry, compressed air as needed to operate
automatic valves and to blow filtered material loose from the micro-filter elements during
backwash.
pressure drops below 800 psig and off when the air tank pressure exceeds 950 psig.
Pressure Gauge PI-901. Indicates the air receiver tank pressure.
Pressure Regulating Valve PRV-901. Reduces the high pressure air from the air receiver tank /
compressor to 100 psig.
Pressure Gauge PI-902. Indicates the pressure as regulated by PRV-901.
properly, the relief valve will release air when the air pressure exceeds 125 psig to protect the air
system components downstream.
PRESSURE MAINTAINING VALVE V-905
FROM 2-STAGE AIR FILTRATION SYSTEM
CHECK VALVE V-906
RELIEF VALVE RV-902
PRESSURE REGULATING VALVE PRV-901
PRESSURE GAUGE PI-901
TO SECTION 3
TO LOW PRESSURE
SWITCH PSL-901 AND
AIR SYSTEM
HIGH PRESSURE
SECTION 1
SWITCH PSH-901
TO AIR RECEIVER TANK R-1
PRESSURE GAUGE PI-902
AIR RECEIVER TANK R-1
PRESSURE SWITCH ASSEMBLY
PSL/PSH-901
Figure 19. Air System: Section 1, Air Receiver Tank R-1, and Pressure Switch PSL/PSH-901.
0002 00-19
