This sale is for Single Counter Balance valves These are widely used for stabiliser legs, cranes & any other hydraulic use where it is essential a function does not drop if hydraulic power is lost ie. broken hose or fitting. These are a mandatory safety item for many hydraulic applications.Adding a counterbalance valve controls motion and provides protection against hose or tube failure.
This valve controls a moving load in ONE direction, preventing it from moving ahead of the pump & locks the load in any position on C1. You can adjust the counterbalance valves with an Allen key to speed or slow the cylinder travel to equal out two cylinder speeds. 1 full turn equals aprox. 1000 PSI per turn.
These are quality items made in Italy.
Materials of Construction
Body = Zinc Plated Steel
Seals = Viton.
Some additional guidelines for counterbalance valve applications:
Specify the counterbalance valve relief setting high enough to stop any motion (flow) at the maximum expected actuator pressure. Generally it is recommended to use a setting of 1.3 multiplied by the maximum load pressure.
Use low pilot ratios (3:1 and 4.25:1) for applications where loads may vary widely. Low pilot ratios require higher pilot pressure and are less efficient but provide stable, precise control for varying loads. # Standard
Use high pilot ratios (8:1 and 10:1) for applications where loads are relatively constant. High pilot ratio valves require lower pilot pressure, have faster response, and are more efficient, but lack stability and precision in response to varying loads.
Do not oversize counterbalance valves. There is no pressure drop operating limit for counterbalance valves and in fact some pressure drop is required to maintain valve operation.
Locate counterbalance valves at or near the actuator to provide maximum load holding protection in the event of hydraulic line failure.
Do not use counterbalance valves with closed-center directional control valves. Pressure trapped between the directional control valve and the actuator can pilot the counterbalance valve open and result in undesired load motion.
Do not use counterbalance valves with tandem-center directional control valves.
Buy with Confidence from a long established Hydraulic Service Center get a 12 month warranty and an Australian Tax Invoice.
Phone: 07 5563 1982
Hours: 8am to 4pm Monday - Friday, excluding public holidays
Tax invoices are supplied with every purchase
If you have any questions please don’t hesitate to contact us for further assistance,
IMPROPER SELECTION, INSTALLATION, IMPLEMENTATION AND/OR OPERATION BY ANYONE OTHER THAN PERSONS WITH APPROPRIATE TECHNICAL AND MECHANICAL TRAINING CAN RESULT IN DAMAGE TO EQUIPMENT OR PROPERTY, SERIOUS PERSONAL INJURY OR DEATH. PROPER PRECAUTIONS AND SAFETY PROCEDURES SHOULD BE IMPLEMENTED PRIOR TO INSTALLATION AND OPERATION OF EQUIPMENT.