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Hydac Corp. Bladder Accumulators
February 19th, 2008
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Company: Hydac Corporation
Hydac bladder accumulators use nitrogen as the compressible medium.The bladder accumulator consists of a fluid section and a gas section, with the bladder acting as a gas-proof screen. The fluid around the bladder is connected with the hydraulic circuit, so that the bladder accumulator draws in fluid when the pressure increases thus compressing the gas. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit. Not all fluids are compatible with every elastomer at all temperatures. HYDAC offers the foilowing choice of elastomers: NBR (standard nitrile); LT-NBR (low temperature nitrile); ECO (epichlorohydrin); IIR (butyl); EPR (ehtylene propylene); FPM (fluorelastomer). HYDAC bladder accumulators consist of a welded or forged pressure vessel (shell), a bladder and ports for gas and fluid inlet. The gas and fluid sides are separated by the bladder.