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
Two-Stage Air Filtration System
The high-pressure air, up to 1800 psig, produced by the compressor is sent to the two-stage filtration
assembly. The filtration assembly consists of the following components (see Figure 17):
Coalescer CO-1
Drain Shutoff Valve V-902
Automatic Drain Valve XV-911
High Pressure Air Relief Valve RV-901
Check Valve V-903
Air Purification Filter AF-2
High-Pressure Air Vent Valve V-904.
Coalescer CO-1 removes oil and water from the high-pressure air. The oil and water is automatically
drained from the coalescer at 15-minute intervals by Automatic Drain Valve XV-911, which is controlled
by the PLC. Relief Valve RV-901 is mounted on the coalescer and relieves air pressure if pressure in the
coalescer exceeds 2200 psig. The high-pressure air then passes through a one-way Check Valve, V-
903, and into Air Purification Filter AF-2, which removes additional oil and water from the air. High-
Pressure Air Vent Valve V-904 is used to drain the high-pressure air from the air system for maintenance.
AIR PURIFICATION FILTER AF-2
HIGH PRESSURE AIR
RELIEF VALVE RV-901
FROM COMPRESSOR
HIGH PRESSURE AIR
VENT VALVE V-904
COALESCER CO-1
CHECK VALVE V-903
DRAIN SHUTOFF VALVE V-902
TO SECTION 1
AUTOMATIC DRAIN
VALVE XV-911
Figure 17. Coalescer CO-1 and Air Purification Filter AF-2.
0003 00-21
