MEGA Corp. MTT-OPS-1 - Manual (Page 20)

MTT-OPS-1
13 Nov 2013
SECTION 2
System Description
2-11
WATER CANNON SYSTEM
The system is comprised of a water cannon (hydraulic
or electric), hydraulic control valve assembly or logic
box, butterfly valve assembly, nozzle and controls.
WATER CANNON (Hydraulic)
A metal waterway that directs
a stream of water in both
elevation (up-down) and
rotation (right-left). Hydraulic
motors move the waterway
based upon hydraulic flow
from the hydraulic control
valve assembly as
commanded by the cab
control joystick. The water
cannon is threaded to a flanged pipe that mounts
directly above the BFV. The water cannon also
provides mounting for a variety of different nozzles.
HYDRAULIC CONTROL VALVE ASSEMBLY
The assembly contains three
hydraulic solenoid valves that
direct hydraulic pressure to
the hydraulic motors on the
water cannon and BFV
cylinder as commanded by
the cab control box. A pressure relief valve is
incorporated in the manifold block to protect the
water cannon system against any over pressurization
conditions. The assembly is mounted to the tank
lower flange and receives hydraulic pressure from the
vehicle hydraulic pump.
HYDRAULIC BFV ASSEMBLY ASSEMBLY
A hydraulically operated
valve that opens or closes
to control water flow to
the water cannon. The
hydraulic cylinder receives
hydraulic pressure from
the hydraulic control valve
or solenoid control box assembly as commanded by
the cab control water cannon switch. The assembly is
clamped between upper and lower pipe flanges.
WATER CANNON (ELECTRIC)
A metal waterway that directs a
stream
of water in both
elevation (up-down) and
rotation (right-left). 24 VDC
electric motors move the
waterway based upon filtered
electronic signals from the logic
box as commanded by the cab
control joystick. The water
cannon is threaded to a flanged pipe that mounts
directly above the BFV. The water cannon also
provides mounting for a variety of different nozzles.
ELECTRO-PNEUMATIC BFV ASSEMBLY
An electro-pneumatic valve that
controls the flow of water to the
water cannon. A 24 volt DC
solenoid receives commands
from a cab control MONITOR /
BFV switch through the logic
box to route pressurized air to
an air chamber which opens or closes a 3” valve. The
assembly is clamped between upper and lower pipe
flanges.
WATER CANNON NOZZLES AND STREAM SHAPERS
Smooth Bore Nozzle
A cone shaped 1.5” diameter nozzle
that directs water flow. The nozzle
has a built in stream shaper that
smooths water flow to increase water
stream distance.
Smooth Bore (Stackable)
A segmented cone shaped nozzle
that directs water flow. The nozzle
opening is adjusted by removing
segments to acquire the most
efficient nozzle opening for a given
water pump operating pressure.
Nozzle segment diameters are 1?”,
1½”, 1¾” and 2”. The nozzle requires
and in-line stream shaper to increase
water stream distance.