- Counterbalance(Ultra-restrictive)
- Counterbalance(Standard) Counterbalance(Semi-restrictive) Counterbalance(Restrictive) Counterbalance(4-port Vented) Counterbalance(Ultra-restrictive)
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Technical Feature
OPERATION
Counterbalance valves with pilot assist are meant to control an overrunning load. The check valve allows free flow from port ② to port ① while a direct-acting, pilot-assisted relief valve controls flow from port ① to port ② . Pilot assist at port ③ lowers the effective setting of the relief valve at a rate determined by the pilot ratio.
FEATURES
• Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
• Restrictive valves have no relief capacity other than as a thermal relief.
• Backpressure at port ② adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the backpressure.
• Reseat exceeds 85% of set pressure when the valve is standard set. Setting lower than the standard set pressure may result in lower reseat percentages.
• Factory pressure setting established at 30cc/min(2 in3/min).
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PerformanceCurves
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Technical Data
Operating Pressure350barFlowSee PRESSURE DROP VS.FLOW graph.CavitySUN T-11ATemperature-40ºF to +250ºF(-40ºC to +120ºC) -
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