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
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Specifications

TypeDiaphragm Accumulator
Model Code DescriptionSBO250-3.5E1/116S-210CK
Fluid Port ConnectionStandard SAE Connection
Weight11.2 kg24.6 lb
Size (L)3.5
MaterialCarbon Steel
SeriesSBO250
Manufacturing ProcessWelded
Connection Size1 1/16-12 UNF Female
RepairableNo
RechargeableYes
Country of InstallationUSA/ASME
Diaphragm CompoundFPM (Fluoroelastomer)
Compound Operating Temperature Range (Water and Water-Glycols (Chlorinated Hydrocarbons))5 to 300 ºF
Shell Construction and Gas Port DesignWelded Construction, rechargeable, ZP Gas Valve Version 1 (M 28 x 1.5)
ShellCarbon steel
Fluid PortCarbon steel
Thread (Society of Automotive Engineers (SAE) – Female)1 1/16 -12 UNF
Flow40 gpm150 L/min
Volume Capacity0.925 gal3.500 L
MAWP3000 psi210 bar
Effective Gas Volume230 in³
Division19
BUnEA

Dimensions

Diameter6.69 in170 mm
Height12.94 in329 mm
Dimension Q40 gpm
Dimension A11.14 in283.0 mm
Hex Size1.81 in46 mm

Construction

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.

Application

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 www.zpcylinder.com. Our cost-effective products are very popular.

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