BVA Hydraulics PAR4003, PARD4001, PARD4003, PARM4003 - Manual (Page 5)

Position 1 (Advance):
Pressured oil flows to
port A.
Position 3 (Retract):
Port A returns flow to
tank.
Position 2 (Hold): Neu-
tral, ports A is closed.
Hold Position.
Port A Port A Port A
P T P T P T
Figure 5- Schematic flow path- PW3 Valve, 3-way, 3-position valve for Single-Acting Cylinder
Port A Port B
1
2
3
BEFORE USE AND SET UP
1. Familiarize yourself with the specifications and
illustrations in this owners manual. Know your pump,
its limitations and how it operates before attempting to
use. Refer to specification chart on page 3 for details.
If in doubt, contact BVA Hydraulics Technical Service
(888) 332-6419.
4. Air Connection: After making the necessary hydraulic
connections above, connect suitable air supply to air
input port. Ensure that your air source can dedicate 44~98
CFM @ 60~100 PSI for rated capacity performance. Refer
to the page 3 Product Specifications for specific pump
requirements.
2. Hydraulic Connection: Clean all areas around the oil
port of pump and cylinder. Inspect all threads and fitting
for signs of wear or damage and replace as needed.
Clean all hose ends, couplers and union ends. Remove
the manifold plug, then connect oil output port to suitable
fittings and application/cylinder.
IMPORTANT: Always secure threaded port connections
with high grade, non-hardening pipe thread sealant. Teflon
tape can be used if only one layer of tape is used and it
is applied carefully, two threads back, to prevent the tape
from being introduced into hydraulic system, which could
cause jamming of precision-fit parts.
!
Once connected to the intended air source, pump
will be energized and oil will flow from the pump to the
tank. Ensure pump lever is in the 'neutral' position
on pumps equipped with PW3, PW4 valves.
!
Once connected to the intended air source, pump
PAR4003, PARM4003:
will be energized and oil will flow from the pump to the
application. ENSURE operator is aware that applica-
tion will be pressurized immediately upon connecting
air source.
PARD4001, PARD4003:
Port A
Port B
Position 1: Pressured
oil flows to port A, port B
returns flow to tank.
Position 3: Pressurized
oil flows to port B, port A
returns flow to tank.
Position 2: Neutral,
ports A & B are closed.
Hold Position
Port A Port B
Port A Port B
Port A Port B
P T P T P T
1
2
3
BVA Pump Mounted Valves are tandem center valves.
Tandem centered valves allow oil to flow from the pump
to tank when in the NEUTRAL position.
Tandem centered valves must be in "neutral" lever
position before starting pump. To pressurize the pump
manifold or the application (cylinder, spreader, etc.),
simply position the lever left or right of center.
5
Figure 6- Schematic flow path- PW4 Valve, 4-way, 3-position valve for Double-Acting Cylinder
Never operate a pump which is disconnected from
application. If operated in this condition, the hose
and connections will become pressurized. This increases
burst hazard.
!