BVA Hydraulics PW2, PW3, PW4, PW33L, PW43L - Manual (Page 3)

OPERATION (refer to schematic flow path, page 4)
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.
1. 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.
2. PW33L and PW43L are valves equipped with a positive locking feature, these models will not permit movement of the load
when the handle is moved between positions.
Models not equipped with this feature, PW2, PW3, PW4, will reposition the load during handle movement.
The amount of load movement will depend on the speed of the handle movement between detent positions.
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Ensure that the rated working pressure of each pressurized attachment be equal to or greater than the rated working
pressure developed by the hydraulic pump.
BEFORE USE
1. Before using this product, read the owner's manual completely and familiarize yourself thoroughly with the product, its components
and recognize the hazards associated with its use.
2. Verify that the product and the application are compatible. If in doubt, call BVA Hydraulics Technical Service (888) 332-6419.
3. Inspect before each use. Do not use if broken, leaking or damaged components are noted.
4. Replace worn or damaged parts with BVA Hydraulics authorized replacement parts only.
5. Use adequate eye protection when operating or near this device.
6. Ensure method of confirming load is accurate and working properly. Have gauge or load cell accuracy verified by qualified
personnel on a yearly basis.
PRODUCT DESCRIPTION
BVA Pump Mounted Manual Control Valves are designed and manufactured for safe hydraulic operation to 10,000 psi.
SET UP
1. Connect and secure hoses, cylinders, fittings, gauges and pump etc. noting that the proper ports are connected. Always
secure threaded port connections with non-hardening pipe thread compound. Take care not to introduce compound into port
orifices. Use an approved, high-grade pipe sealant to seal all hydraulic connections. When using teflon tape, never apply the
tape over ends of fittings where it can be torn loose and get into the hydraulic system.
If you are not trained and familiar with installing a valve, please have an authorized BVA service center
perform this procedure.
TROUBLESHOOTING
1. System will not build pressure.
a. Check pressure setting of pump, see pump's service instruction.
b. Check and tighten all hydraulic connections.
c. If trouble is not corrected, remove cylinder and hoses from the valve, place a gauge directly in valve port A and turn valve
to advance position. If no pressure developed, the unit should be taken to service center. If pressure develops, the cylinder
or connections are the problem.
2. Cylinder will not hold load. This is an indication of worn or damaged seals. Unit must be replaced/repaired by service center.
MAINTENANCE
1. Inspect hoses and connections daily. Replace damaged components immediately with BVA Hydraulics parts only.
2. Tighten connections as needed. Use pipe thread sealing compound when servicing connections.
3. Always use clean, approved hydraulic fluid and change as recommended or sooner if the fluid becomes contaminated (never
exceed 400 hours). Follow pump manufacturers instructions for changing and adding hydraulic fluid. Use only good quality
hydraulic fluid. We recommend Mobil DTE13M or equivalent when using with hand pump or air pump; BVA Hydraulics Oil (F01)
or equivalent when using with electric pump. Never use brake fluid, transmission fluid, turbine oil, motor oil, alcohol, glycerin
etc. Use of other than good quality hydraulic oil will void warranty and damage the cylinder, pump, hose etc.
Storage
Depressurize pump, disconnect all hydraulic lines to prevent accidental operation. Wipe the unit clean. Store in a clean, dry
environment.
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