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Accumulators with Ultra High Response Reliability

MagdAcc Piston Type Accumulators

MagdAcc Piston Type Accumulators

A PistoFram piston type accumulator has a light weight piston where the dynamic seals are aligned with the piston center, and where both the gas and liquid skirt ends have graphite filled Teflon guide rings. The hollow piston center contains a diaphragm which is able to accept or produce liquid flow by instantaneous deflection during the millisecond or so taken for piston mass acceleration; producing faster response characteristics than from traditional glued balloon in can bladder accumulators. At gas or liquid end of stroke the central diaphragm flow hole cannot align with the inlet out porting that is spaced either side of centerline, thus there is no encumbrance to flow of anti extrusion devices.

HydroTrole piston accumulators have a sealing geometry that ensures pre-charge gas retention with immeasurable loss over an MTBF (meantime between failure) design criteria of 32 million cycles, with minimum hysteresis break out stiction achieved by placing the dynamic seals so closely adjacent each other that seal deflection ensures that the lubricant held between the seals instantly reaches the same pressure as the oil and the pre-charge gas. All pistons with so lightly loaded dynamic seals are prevented from experiencing a differential pressure at gas end and at liquid end of stroke by a static encapsulated shut-down seal than face seals against the end of the piston skirt on each side. Piston accumulators are recommended because when they do begin to go down it is gradual progressive, and determinate. They are recommended for emergency standby power.

Main Features: Solid Light-Weight Piston, Close-Coupled Seals, Dual Graphite-Filled Bearing Strips for Low Stiction, Various Seal Elastomers, Zero Leakage When Shut Down, Super Fast Response, Zero Hydro-locking, Flow-Thru Porting Facility Options.


Part Numbers / Sizing





Information About: Part Numbers / Sizing

  • The number that is followed by the letters "Lt" denotes the number of liters nominal volume. There are 61 cubic inches in one liter.



PistoFram Piston Accumulator Applications

PistoFram Piston Accumulator ApplicationsApplication(s) or example(s) that save peak hydraulic horsepower energy levels and reduce capital costs for pumping systems, whilst increasing control precision.

PistoFram accumulators produce faster response for less acceleration delta P can produce flow without lag synchronized to aerospace servo valve profiles and of course all less sophisticated system requirements.

PistoFram Piston Accumulator Applications

PistoFram Piston Accumulator Applications




PistoFram Accumulator Assembly

HydroTrole accumulators are easy and simple to assemble without specialized tooling or equipment; including spares, repairs, and recertification capability.

PistoFram Piston Accumulator Assembly

PistoFram Piston Accumulator Assembly