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HSX User Manual ◄ 13
Tool: The hydraulic attachment which the auxiliary circuit is intended to power. These may include hydraulic breakers,
compactors, shears, etc.
Operating Pressure: That pressure at which the tool will naturally operate without inuence of outside pressure relief
mechanisms. This pressure is an operating characteristic of the tool and cannot be altered by the end user without
changing the tool design.
Relief Pressure: The relief pressure is that pressure at which the circuit will dump uid in order to protect itself
from damage.
Back Pressure: The pressure at the tool’s connection to the return circuit of the carrier.
Flow Meter: Instrument for testing the operating characteristics of a hydraulic circuit. The data usually available from
this device are pressure (psi/bar), ow (gpm/lpm) and temperature (°F/°C).
Restrictor Valve: A valve on the ow meter which allows the user to simulate an operating tool by adding a pressure
load (through restriction) to the circuit. This feature is used to evaluate relief settings and ow ratings at pressure.
V60/V65/V100 Valves: A priority ow control valve manufactured by Stanley Hydraulic Tools. Allows for optimum
operation of any attachment by providing the proper amount of ow for operation of the tool the “priority” aspect allows
the attachment to function properly if another control function is activated.
Inlet Flow: The hydraulic oil supplied to the “IN” port of the tool or valve.
Regulated Flow: The ow of oil supplied to the tool by the V60/V100 valve.
By-Pass Flow: The oil ow that is supplied by the carriers pump, but not used in the operation of the attachment. By-
pass ow equals inlet ow (to the valve) minus the regulated ow.
Pressure Line: The hydraulic line(s) which supply pressurized oil from the pump to the valve or tool.
Return Line: The hydraulic line which connects the “OUT” port of the tool to the tank circuit of the carrier.
Cracking Pressure: The pressure at which the relief valve starts to open. Can be seen by a drop in the ow rate as
shown by the ow meter.
Full Open Pressure: The pressure at which the relief valve is completely open dumping all system ow to the tank.
Ambient Air The temperature of the outside air.
Temperature:
Stabilized The temperature at which the carrier hydraulic system temperature will stop rising during testing or opera-
tion.
Temperature:
DEFINITION OF TERMS