MAC/MTT-OPS-1
26 FEB 2019
SECTION 2
System Description
2-24
WATER CIRCULATION SYSTEM
A system that consists of a hydraulic butterfly
valve assembly and a perforated 4” pipe located
inside the water tank. The system diverts the flow
of water from the spray system to the perforated
pipe, circulating the water in the tank. The
circulation valve must be closed to operate the
spray system, and water cannon.
SUCTION LOADING (IF EQUIPPED)
A second water pump mounted typically to the
water pump sump at the rear of the MTT. The
suction loading station is equipped with a manual
diversion valve that will switch the hydraulic oil
flow from the main discharge pump drive motor to
the suction loading pump drive motor. When oil is
diverted to the suction loading drive motor it can
pull water from a holding pond and fill the MTT.
The suction loading option includes lengths of 4”
suction hose equipped with quick couplers and a
check valve inlet foot with a debris screen. The
suction hoses are typically stored in tubes either
built into the MTT or a hanging tube arrangement.
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