The main business of the company is: bladder accumulator, Diaphragm accumulator, Piston Type Accumulator, oxygen cylinder, CO2 cylinder, gas cylinder, nitrogen gas cylinder, Welcome to inquire and negotiate cooperation by phone.
About    |    Contact

Diaphragm Accumulator/

SBO210-2E4/114S-210CK Type SBO Diaphragm Accumulators

Diameter 6.57 in167 mm
Height 9.09 in231 mm
Dimension Q 40 gpm
Dimension A 6.81 in173.0 mm
Hex Size 1.81 in46 mm

  • Product Detail

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


TypeDiaphragm Accumulator
Model Code DescriptionSBO210-2E4/114S-210CK
Fluid Port ConnectionStandard SAE Connection
Weight6.6 kg14.6 lb
Size (L)2
MaterialCarbon Steel
SeriesSBO 210
Manufacturing ProcessWelded
Connection Size1 1/16-12 UNF Female
Country of InstallationUSA/ASME
Diaphragm CompoundIIR (Butyl)
Compound Operating Temperature Range (Water and Water-Glycols (Phosphate Esters and Brake Fluids))-20 to 200 ºF
Shell Construction and Gas Port DesignWelded Construction, rechargeable, ZP Gas Valve Version 4 (8VI-ISO 4570)
ShellCarbon steel
Fluid PortCarbon steelZP
Thread (Society of Automotive Engineers (SAE) – Female)1 1/16 -12 UNF
Flow40 gpm150 L/min
Volume Capacity0.528 gal2.000 L
MAWP3000 psi210 bar
Effective Gas Volume120 in³


Diameter6.57 in167 mm
Height9.09 in231 mm
Dimension Q40 gpm
Dimension A6.81 in173.0 mm
Hex Size1.81 in46 mm


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

For use with certain aggressive or corrosive fluids, or in a corrosive environment, ZP 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

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

ZP 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.


Some common applications of diaphragm accumulators are:Agricultural Machinery & EquipmentForestry EquipmentMachine ToolsMining Machinery & EquipmentMobile & Construction EquipmentOff-Road Equipment

Diaphragm Materials

Not all fluids are compatible with every elastomer at all temperatures, therefore, ZP offers the following materials:NBR (Standard Nitrile)LT-NBR (Low Temperature Nitrile)ECO 30 (Epichlorohydrin)IIR (Butyl)FP

Additional Information

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

ZP manufactures two types of diaphragm accumulators:Non-repairable (welded)Repairable (threaded)

If you work with gas cylinder or information about our company. You can communicate with us on the website. Our official website is Our cost-effective products are very popular.



Leave a Reply