Description
Bladder Type
Bladder-type vessels are ideally suited for applications as Pulsation Dampeners but are also commonly used as Surge Absorbers and Thermal Volume Compensators. They feature maintenance friendly top access for quick and simple bladder removal and replacement on site.
Standard (shell) materials are 316/316L Stainless Steel, Polypropylene or Polyvinylchloride (PVC). Vessel bodies in other materials such as Carbon Steel, Alloy 20, Hastelloy C and PVDF are also available. Standard bladder materials are supplied in Viton and PTFE.
Designs are available in pressure ratings to as high as 300 BarG.
Screwed or flanged connections are available.
Volume Bottle Type
The simplest form of a pulsation dampener is a volume bottle, sometimes called a surge drum. A volume bottle is a pressure vessel without internal baffles and is usually mounted directly to the compressor cylinder connection, either suction or discharge.
Benefits
• Ease of Construction
• Low Pressure Drop
Disadvantages
• Difficulty in accurately predicting pulsation levels
• Achieving low pulsation levels without resorting to oversized vessel
A generally accepted formula for determining the size of volume bottles for application up to 600 psi is 5 times the cylinder swept volume for discharge bottle, and 7.5 times the cylinder swept volume for suction bottle. Typically, this method of calculating the size of the dampener for a compressed air system will provide pulsation dampening to within + or – 5% absolute pressure, but cannot be relied upon.
We provide volume bottles in different capacities depending upon the application.
Available MOC’s are: CS, SS316, CPVC, CS+PTFE lining etc
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