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
Air System Section 1
Air System Section 1 contains the following main components (see Figure 18):
Pressure Maintaining Valve V-905
Check Valve V-906
Pressure Gauge PI-901
Pressure Regulating Valve PRV-901
Pressure Gauge PI-902
Relief Valve RV-902
Pressure Maintaining Valve V-905 maintains a pressure of approximately 1800 psig in the system
between the compressor and itself to ensure proper loading of the compressor cylinder valves. One-way
Check Valve V-906 maintains pressure to the input side of Pressure Regulating Valve PRV-901.
Pressure Gauge PI-901 indicates the air pressure in Air Receiver Tank R-1. Pressure Regulating Valve
PRV-901 reduces the high-pressure air from the air compressor to 100 psig. The reduced pressure is
indicated by Pressure Gauge PI-902. Relief Valve RV-902 will relieve system pressure on the reduced-
pressure side of Pressure Regulating Valve PRV-901 if the system pressure exceeds 125 psig.
PRESSURE MAINTAINING VALVE V-905
FROM 2-STAGE AIR FILTRATION SYSTEM
CHECK VALVE V-906
PRESSURE REGULATING VALVE PRV-901
PRESSURE GAUGE PI-901
TO LOW PRESSURE
SWITCH PSL-901 AND
HIGH PRESSURE
SWITCH PSH-901
TO AIR RECEIVER TANK R-1
RELIEF VALVE RV-902
TO SECTION 3
PRESSURE GAUGE PI-902
Figure 18. Air System Section 1.
0003 00-22
