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A diaphragm accumulator consists of a fluid section and a gas section with the diaphragm acting as a gas-proof screen. The fluid section is connected with the hydraulic circuit, so that the diaphragm accumulator draws in fluid when pressure increases and the gas is compressed. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit. At the base of the diaphragm is a valve poppet, which shuts off the hydraulic outlet when the accumulator is completely empty and thus prevents damage to the diaphragm.