Hidracar is a widely known brand for high quality pulsation dampeners and has a long standing relationship with Doedijns. The Hidracar dampeners are widely used in the petrochemical industry, onshore as well as in the offshore industry, and also in water treatment, pharmaceutical and the food industry.
Pulsation dampeners, also called pulsation dampers, are used for stabilizing the flow and pressure in circuits with volumetric or dosing pumps. They are used in a wide range of applications.
A pulsation dampener is a container with gas inside, normally dry nitrogen.
Separator element
In every pulsation dampener, there is a separator element between the gas it is charged with and the liquid of the circuit; its basic function is to avoid leakage of the gas into the circuit. This separator element is made of two kinds of materials: rubber (NBR, EPDM, FPM(FKM), butyl, silicone, etc.) or a thermoplastic material (normally PTFE); although it can also be made of stainless steel.
When a rubber separator element is used, the dampener is called bladder type. If the material is PTFE, we refer to membrane type and bellows type dampeners, depending on the shape of the separator element.
When a bellow must withstand high temperatures, the bellow will be made of stainless steel.
Dampener bodies
Most Hidracar dampener bodies are made of AISI-316(L) stainless steel to meet the harshest operating conditions. However plastic dampeners are also possible and made from PVC, PP or even PVDF.
Selecting the right type of dampener
Choosing between different types of dampeners depends on characteristics of the circuit like working pressure, temperature, and chemical compatibility between the liquid and the material of the separator.
Design Codes
All our pulsation dampeners are made according to the European PED2014/68/EU pressure vessels regulations, and their design meets the AD-2000 and ASME VIII Div.1 & 8 codes requirements. Hidracar is an ASME Certified company and can mark the dampeners with the U-Stamp.
We can also supply all of our dampeners with different circuit connections, gauges as well as fitted with whatever flange, either screwed on, welded, or integrated, to suit the customer’s needs.
