2323
Stripe Hog Systems
Manual Bypass Valve & Rupture Disc
Diverter Valve (Dump Valve)
The diverter valve is a safety feature that is located
on the ultra-high pressure pump manifold. When
activated it diverts high pressure water from the
blasting heads to the clean water tank immediately
eliminating the high pressure water at the blasting
heads. The diverter valve assembly consists of a
hydraulic cylinder, shuto cartridge, diuser tube
and digital high pressure sensor.
The shuto cartridge is located inside the body of
the diverter valve assembly. It is generally open
and controlled by the START/STOP switch on the
Joystick console in the cab of the truck. When the
START button is pressed the shuto cartridge is
closed by the hydraulic cylinder forcing all high
pressure water to the blasting heads. When the
STOP button is pressed the hydraulic cylinder
opens the shuto cartridge diverting high pres-
sure water from the blasting heads directly to the
bypass hose and the clean water tank. This allows
the Ultra-high pressure pump to remain operat-
ing at maximum capacity, ready to provide high
pressure to the blasting heads immediately. If the
charge water pump is turned o or fails, the pres-
sure switch on the hydraulic manifold disengages
the 40K clutch and the UHP pump. The pressure
in the entire system immediately drops to zero
regardless of the diverter valve position.
When setting pressure ALWAYS ensure that the
system pressure drops to less than 100 PSI (7
Bar) immediately when the START/STOP switch
is turned o. If system pressure does not imme-
diately drop below 100 PSI when diverter valve is
activated, do not use the equipment until repairs
are made to the diverter valve.
Manual Bypass Valve
The Manual Bypass Valve is located on top of the
ultra-high pressure pump Manifold. The operator
can open or close the valve to increase or de-
crease water volume and pressure to the blasting
heads while maintaining optimum engine RPM
and torque.
The Manual Bypass assembly consists of a manual
adjustment knob, bypass cartridge, diuser tube,
bypass hose and a rupture disc. During high pres-
sure blasting operations, turning the adjustment
knob on the manual bypass valve clockwise will
decrease the ow of water through the bypass
cartridge and system, increasing water volume
and pressure to the blasting heads. Turning the
adjustment knob counterclockwise will divert
more of the high pressure water ow through
the manual bypass cartridge to the bypass hose
and clean water tank, reducing water volume and
pressure to the blasting heads. Bypassing a large
volume of water through the manual bypass valve
at high pressure can cause the water temperature
to rise in excess of 210 degrees Fahrenheit (99 C).
Hot water can signicantly reduce the service life
of the packing seals in the high pressure pump.
When setting initial blasting pressure, always
open the manual bypass valve completely, set
the engine and UHP pump to maximum operat-
ing RPM and close the diverter valve. Then slowly
close the manual bypass valve while monitoring
the high pressure gauge until the desired oper-
ating pressure is achieved. The manual bypass
valve continuously recirculates a small volume
of water back to the clean water tank. Once the
desired blasting pressure is set, high pressure to
the blasting heads can be turned on or o using
the diverter valve controlled by the START/STOP
switches in the joystick panel.
NOTICE:
THE DUMP VALVE SWITCH ON THE SKIP SPEED REMOTE
CONTROL MUST BE IN THE ON POSITION BEFORE THE
START/STOP SWITCH ON THE JOYSTICK CONSOLE WILL
ACTIVATE THE DIVERTER VALVE TO PROVIDE HIGH
PRESSURE WATER TO THE BLASTING HEADS.
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