unloading piston

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• unloading valve — A special type of pressure regulator installed as part of an accumulator system. Its functions are to direct fluid into the accumulator system, to maintain pressure within set pressure limits, and to unload completely and bypass all fluid flowing …   Aviation dictionary

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• Multi-jackbolt tensioner — Multi jackbolt tensioners (MJT) provide an alternative to traditional bolted joints Rather than needing to tighten one large bolt, MJTs use several smaller jackbolts to drastically reduce the torque required to attain a certain preload. MJTs… …   Wikipedia