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Diaphragm Accumulators

DiaphragmAccumulators_cat

Fluids are practically incompressible and cannot, therefore, store pressure energy. Also, the compressibility of a gas serves in hydraulic accumulators for storing fluids. HYDAC diaphragm accumulators are based on this principle, using nitrogen as the compressible medium.

Indeed, a diaphragm accumulator consists of a fluid section and a gas section with the diaphragm acting as the gas-proof screen.

Therefore, the fluid section is connected to the hydraulic circuit so that the diaphragm accumulator draws in the fluid when the pressure increases and the gas are compressed. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.

Moreover, at the base of the diaphragm is a valve poppet. This shuts off the hydraulic outlet when the accumulator is completely empty and thus prevents damage to the diaphragm.

Note:

HYDAC diaphragm accumulators when fitted with an HYDAC Safety and Shut-off Block comply with the regulations of the Pressure Equipment Directive PED 97/23/EC and the German regulations on health & safety at work (Betr.Sich.V.).

See catalogue section: Safety and shut-off block SAF/DSV No. 3.551

Features:

  • design optimised for function and weight,
  • choice of installation positions,
  • no pressure differential between fluid side and gas side,
  • low-maintenance and long service life.

 

Specifications:

  • Nominal volume: 0.075 … 4 l,
  • Permitted operating pressure: 40 … 750 bar,
  • Elastomers: NBR, ECO, IIR, FKM (FPM) and others,
  • accumulator shell materials: carbon steel, stainless steel, aluminium and others.

 

PART NODESCRIPTION
3041890SBO 250 – 0.075 E1 / 112U - 250 AK
3041892SBO 210 – 0.16 E1 / 112U - 210 AK
3041895SBO 210 – 0.32 E1 / 112U - 210 AK
3041898SBO 210 – 0.5 E1 / 112U - 210 AK
3041901SBO 330 – 0.6 E1 / 112U - 330 AK
3041933SBO 210 – 0.75 E1 / 112U - 210 AK
3041940SBO 200 – 1 E1 / 112U - 200 AK
3041953SBO 210 – 1.4 E1 / 112U - 210 AK
3041963SBO 100 – 2 E1 / 112U - 100 AK
3041968SBO 210 – 2 E1 / 112F - 210 AK
3041974SBO 210 – 2.8E1/112U-210AK
2112436SBO250 3.5 E1/112 F 210 AK
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HYDAC Australia

HYDAC New Zealand

AUSTRALIA 1300 449 322

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