The pressure fluctuations occurring in hydraulic systems can be periodic or single occurrence problems due to:
Dampeners have two fluid connections for inline mounting. The volume of flow is directed straight at the bladder or diaphragm by diverting it into the fluid valve. This causes direct contact of the fluid flow with the bladder or diaphragm which balances the flow rate fluctuations via the gas volume. It is particularly effective with higher frequency oscillations. The gas precharge pressure is adjusted for the specific systems operating conditions.
Construction
HYDAC pulsation dampeners consist of:
Compound Materials
Not all fluids are compatible with every elastomer at all temperatures. Therefore, HYDAC offers the following choice of elastomers:
To determine which material is appropriate... ALWAYS REFER TO FLUID MANUFACTURER’S RECOMMENDATION
Corrosion Protection
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 accumulator parts that come in contact with the fluid, or are exposed to the hostile environment.
Mounting Position
The mounting position of hydraulic dampeners is dependent on the dampener chosen and the specific application. The preferred position is typically vertical.
System Mounting
Dampeners should be mounted as close as possible to the pulsation source.
Applications
Pulsation dampeners are used to: