Diaphragm pulsation damper, also known as a pulse dampener or pulsation buffer, is a commonly used component to eliminate pipeline pulsation and water hammer in a metering pump system. It is a necessary accessory for metering pumps. The diaphragm type pulse dampener is divided into upper and lower housing, separated by a PTFE & rubber composite diaphragm in the middle.
Volume: 0.15L to 20L (see specification table for details)
Rated pressure: 1.0MPA for plastic material; 2.5MPA, 5MPA, 10MPA for metal material (higher pressure can be customized)
Connection method: thread, flange, quick connection, etc., can be customized
Can be equipped with insulation jacket
Shell material (mainly referring to the liquid contacting part): PVC, PP, PVDF, PTFE, carbon steel, SS304, SS316L, fluorine lining, Hastelloy, etc., can be customized as required
Diaphragm material: PTFE composite NBR (use temperature -20-80℃); PTFE composite acrylic acid ester (use temperature 80-160℃)
Simple method for selecting the volume: multiply the volume of each stroke by 10 to obtain the minimum volume that can reduce 90% of the pulsation.
It is the most commonly used type of pulse dampener. The biggest advantage is that the diaphragm separates the pre-charged gas and the liquid in the pipeline, making it easy to maintain. Under suitable selection and charging conditions, it can eliminate more than 90% of pulsation.
Features of diaphragm pulsation damper:
• Diaphragm structure separates the medium and compressed air, ensuring long-term stable operation.
• The contact medium parts only include the lower shell and diaphragm. The conventional diaphragm adopts the rubber-lined PTFE form. The PTFE undergoes multiple rolling processes and has good corrosion resistance and high service life.
• Reduces the harm of water hammer to the system, reduces the peak value of flow rate fluctuation, and protects the pipeline, elbows, and joints from pressure wave impact.
• Creates a good working environment for metering pumps and improves the performance of the pump, reducing system energy consumption.
• Allows the use of smaller pipe diameters, reducing costs. When used in conjunction with a back pressure valve, the pressure wave in the pipeline can be reduced to near-zero.
|Volume（L)||Pressure(MPa)||Valve body(MM)||Shell diameter(MM)||Connection|
|RXMZ-P2.0/1.0||2.0||1.0||320||260||RC 1-1/4″RC 1-1/2″||PVC/PP/PVDF|
|RXMZ-S12/2.5（double diaphragm）||10||2.5||650||330||RC 2″||304/316L|
|RXMZ-S20/2.5（double diaphragm）||10||2.5||700||418||RC 2-1/2″||304/316L|