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BDAY - Double counterbalance valves in line, for open center
Counterbalance valves are used to keep a load locked, the built-in relief valve protects the system from overpressure in the cylinder by draining the oil.
BFA - Double counterbalance valves for open center, flanged version
BFA (Gas thread) counterbalance valves allow a load to be kept locked, the built-in relief valve protects the system from overpressure in the cylinder by draining the oil.
BSAY - Single counterbalance valves, for open center
BSAY counterbalance valves (Gas thread) are used to keep a load locked, the built-in relief valve protects the system from overpressure in the cylinder by draining the oil.
COUNTERBALANCE VALVES - Counterbalance valves, also known as overcenter valves , are a type of pressure control valve. They prevent uncontrolled lowering of the load on cylinders or engines. They are therefore preloaded with a pressure setting higher than the maximum permitted load.