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Diaphragm accumulators are a cost effective option for numerous functions involving energy storage, shock absorption or pulsation dampening in a hydraulic or fluid system. They are well suited for applications where smaller fluid volumes and flow rates are adequate and that require or involve:
  • Compact design
  • Low weight
  • Flexible mounting positions
  • Extremely quick shock response
  • Low cost
  • Low lubricity fluids, like water
Unit of Measure

Specifications

Type

 N/A Diaphragm Accumulator

Model Code Description

 N/A SBO210-0,75E1/116U-210AB

Fluid Port Connection

 N/A Male / Female Combination Connection

Weight

 N/A 2.8 kg6.2 lb

Size (L)

 N/A 0.75

Material

 N/A Carbon Steel

Series

 N/A SBO 210

Manufacturing Process

 N/A Welded

Connection Size

 N/A G1/2 BSPP Female Plus M33x1.5 DIN 13 Male

Repairable

 N/A No

Rechargeable

 N/A Yes

Country of Installation

 N/A PED/CE

Diaphragm Compound

 N/A FPM (Fluoroelastomer)

Compound Operating Temperature Range (Water and Water-Glycols (Chlorinated Hydrocarbons))

 N/A 5 to 300 ºF

Shell Construction and Gas Port Design

 N/A Welded Construction, rechargeable, HYDAC Gas Valve Version 1 (M 28 x 1.5)

Shell

 N/A Carbon steel

Fluid Port

 N/A Carbon steel

Thread (British Standard Pipe Parallel (BSPP) - Female)

 N/A G1/2

Thread (DIN 13 - Male)

 N/A M33 x 1.5

Flow

 N/A 25 gpm95 L/min

Maximum Pressure Ratio (p2:p0)

 N/A 8:1

Volume Capacity

 N/A 0,198 gal0,750 L

MAWP

 N/A 3000 psi210 bar

MAWP Values for Stainless Steel Models

 N/A 2000 psi140 bar

Effective Gas Volume

 N/A 45 in³

BUn

 N/A EA

Dimensions

Diameter

 N/A 4.76 in121.0 mm

Height

 N/A 6.68 in170 mm

Dimension Q

 N/A 25 gpm

Dimension A

 N/A 4.88 in124.0 mm

Hex Size

 N/A 1.42 in36 mm

Construction

N/A Both types of diaphragm accumulators have the same basic construction. The difference is in the shell. The welded version has a shell that is electron-beam welded, and therefore cannot be repaired. The threaded type has a shell made up of two halves (top and bottom) which are held together by a threaded locking ring.

Corrosion Protection

N/A For use with certain aggressive or corrosive fluids, or in a corrosive environment, HYDAC offers protective coatings and corrosive resistant materials (i.e. stainless steel) for the parts that interface with the fluid or are exposed to the hostile environment.

Mounting Position

N/A Diaphragm accumulators are designed to mount in any position. In systems where contamination is a problem, we recommend a vertical mount with the fluid port oriented downward.

System Mounting

N/A HYDAC diaphragm accumulators are designed to be screwed directly onto the system. We also recommend the use of our mounting components, to minimize the risk of failure due to system vibrations.

Application

N/A Some common applications of diaphragm accumulators are:

  • Agricultural Machinery & Equipment
  • Forestry Equipment
  • Machine Tools
  • Mining Machinery & Equipment
  • Mobile & Construction Equipment
  • Off-Road Equipment

Diaphragm Materials

N/A Not all fluids are compatible with every elastomer at all temperatures, therefore, HYDAC offers the following materials:

  • NBR (Standard Nitrile)
  • LT-NBR (Low Temperature Nitrile)
  • ECO 30 (Epichlorohydrin)
  • IIR (Butyl)
  • FP

Additional Information

N/A Diaphragm Accumulators have been successfully applied in both industrial and mobile applications for energy storage, maintaining pressure, leakage compensation, and vehicle hydraulic systems.

HYDAC manufactures two types of diaphragm accumulators:

  • Non-repairable (welded)
  • Repairable (threaded)