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TM 55-1905-220-14-8
4-18.
SEWAGE SYSTEM VACUUM PUMP.
a.  Vacuum pumps evacuate the collection tank and influent lines to the water closets and urinal
discharge valve. A pressure sensing switch controls the pumps to maintain a low pressure of 13 to 16 inches
Hg. Upon actuation and opening of a water closet valve, the sewage is pushed through the influent line or
piping to the collection tank.
b. The following is an index to the vacuum pump maintenance procedures.
DESCRIPTION
PARAGRAPH
Vacuum Pump
4-18.1
Vacuum Pump Motor
4-18.2
4-662

 


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