
VIEW OF THE HYDRAULIC ON / OFF VALVE BLOCK
THE VALVE BLOCK is the seat af all components that controls the hydraulic circuit, the part is
obtained working a laminated aluminium block
1. OIL INLET HOLE – oil enters in pressure in the valve from this hole
2. ROTATING JOINT is an adjustable joint where the quick couplers are installed. It permits to
fold the quick coupler after the use protecting it against shocks. It also allows the flexible
hose to have a natural bend avoiding sharp bends..
3. FILTER CARTRIDGE is the hydraulic oil filter. It can easily substituted but it cannot be
maintained
4. MALE QUICK COUPLER is the quick coupler which the oil comes out under pressure
through from “P” power pack. The male quick coupler should always be installed in this
position for guaranteeing the right circulation of the oil.
5. ON/OFF FLOW LEVER is the lever which the oil is sent to flexible hoses and hydraulic tool
through. It is OFF placed rightwards, it is ON placed leftwards.
The lever should always be in OFF position at the end of operations or when the motor is
started. The illustration shows the lever as installed on the model SCORPION ( pointed to
the center of the pack ), on the other power packs included the RAPTOR E the lever is
installed on the front part ( pointed to the exterior ) but the sense of the ON OFF position is
the same
6. OIL OUT LET HOLE ( only model SCORPION ) – the oil exits the valve at low pressure from
this hole and returns to tank.On the models RAPTOR – MANTA this hole is plugged as the
oil baypasses to tank from an internal passage.
7. PRESSURE RELIEF VALVE is the valve adjusting the maximum value of the hydraulic
pressure of the power pack. It is adjusted originally at a value of 140 BAR. It can be adjusted
at different values of pressure
8. ROTATING JOINT is an adjustable joint where the quick couplers are installed. It permits to
fold the quick coupler after the use protecting it against shocks. It also allows the flexible
hose to have a natural bend avoiding sharp bends..
9. FEMALE QUICK COUPLER is the quick coupler which the oil returns to tank “T” The female
couplers is in communication with tank and should always be installed in this position for
guaranteeing the right circulation of the oil.