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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 SBO200-1E4/663A9-200AK

Fluid Port Connection

 N/A BSP Connection

Size (L)

 N/A 1

Material

 N/A Low Temp Carbon Steel

Series

 N/A SBO 210

Manufacturing Process

 N/A Welded

Connection Size

 N/A G 1/2 BSPP Female

Repairable

 N/A No

Rechargeable

 N/A Yes

Country of Installation

 N/A China Hong Kong

Diaphragm Compound

 N/A ECO (Hydrin)

Compound Operating Temperature Range (Water and Water-Glycols (Mineral Oils and Water (with Low Temperature CS Shell)))

 N/A -40 to 250 ºF

Shell Construction and Gas Port Design

 N/A Welded Construction, rechargeable, HYDAC Gas Valve Version 4 (8VI-ISO 4570)

Shell

 N/A Low temperature carbon steel (≤ -20 ºF)

Fluid Port

 N/A Low temperature carbon steel (≤ -20 ºF)

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

 N/A G1/2

Flow

 N/A 25 gpm95 L/min

Volume Capacity

 N/A 0.264 gal1.000 L

MAWP

 N/A 2900 psi200 bar

BUn

 N/A EA

Dimensions

Diameter

 N/A 5.35 in136 mm

Height

 N/A 7.91 in201 mm

Dimension Q

 N/A 25 gpm

Dimension A

 N/A 5.39 in137 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)