Simplex P140 User Manual

6
3. Open release valve (turn counter-clockwise) to release
pressure, allowing oil to flow back to the reservoir.
Slowly open release valve to release the pressure and
control the flow of oil back to the reservoir.
Note: The amount that the release valve is opened controls
the speed of the oil returning to the pump and the retract
speed of the cylinders lowering the load.
4.4 Single-Acting Applications with 3-Way, 2 Position
Manual Valve (Models P230 & P461)
1. Shift the valve lever to the advance position. See
Figure 2, position 2.
Figure 2
2 1
Vent
Screw
2
1
A A
Retract
Advance
Valve Positions - Models P230 & P461
2. Operate pump handle to deliver hydraulic power to the
system. Pressure will be maintained until the valve is
shifted.
3. Slowly shift the valve lever to the retract position to
release pressure and control the flow of oil back to the
reservoir. See Figure 2, position 1.
The amount that the valve is opened controls the
speed of oil returning to the reservoir and the retract
speed of the cylinder(s) lowering the load.
Note: Models P230 and P461 are equipped with a
directional control valve. Inline system check valves are
recommended for controlling cylinder movement under
load with these pump models.
4.5 Double-Acting Applications with 4-Way,
3 Position Manual Valve
(Models P140D, P143D, P230D, P300D, P301D &
P461D)
Pumps with 4-way control valves are designed to operate
double-acting cylinders.
See Figures 3A and 3B for valve lever positions. Valve
appearance and location will vary, depending on pump
model.
1. Position lever on 4-way valve to select function as
follows:
a. To Advance: move lever to the advance position.
b. For Neutral: move lever to the neutral position
(both advance and retract ports are blocked in this
position).
c. To Retract: move lever to the retract position.
Retract
Valve Positions - Models P230D & P461D
Advance
Neutral
Figure 3A

Simplex P140 Specifications

General

Brand	Simplex
Model	P140
Category	Water Pump
Language	English