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.
Technical Spec:
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
Materials
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 dampener:
• 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.
Model of Diaphragm Pulsation Dampener
| Model | Material (wetted parts) | Capacity（L） | Rated Pressure（MPa） | Standard connection |
| RXMZ-P0.15/1.0 | PVC | 0.15 | 1.0 | RC 1/2" |
| RXMZ-P0.35/1.0 | PVC | 0.35 | 1.0 | RC 1/2" |
| RXMZ-P0.6/1.0 | PVC | 0.6 | 1.0 | RC 3/4" |
| RXMZ-P1.0/1.0 | PVC | 1 | 1.0 | RC 1" |
| RXMZ-P2.0/1.0 | PVC | 2 | 1.0 | RC 1-1/4" |
| RXMZ-P4.0/1.0 | PVC | 4 | 1.0 | RC 1-1/2" |
| RXMZ-S0.15/2.5 | SUS304 | 0.15 | 2.5 | RC 1/2" |
| RXMZ-S0.35/2.5 | SUS304 | 0.35 | 2.5 | RC 1/2" |
| RXMZ-S0.35/5.0 | SUS304 | 0.35 | 5.0 | RC 1/2" |
| RXMZ-S0.35/10 | SUS304 | 0.35 | 10.0 | RC 1/2" |
| RXMZ-S0.6/2.5 | SUS304 | 0.6 | 2.5 | RC 3/4" |
| RXMZ-S0.6/5.0 | SUS304 | 0.6 | 5.0 | RC 3/4" |
| RXMZ-S0.6/10 | SUS304 | 0.6 | 10.0 | RC 3/4" |
| RXMZ-S1.0/2.5 | SUS304 | 1 | 2.5 | RC 1" |
| RXMZ-S1.0/5.0 | SUS304 | 1 | 5.0 | RC 1" |
| RXMZ-S1.0/10 | SUS304 | 1 | 10.0 | RC 1" |
| RXMZ-S2.0/2.5 | SUS304 | 2 | 2.5 | RC 1-1/4" |
| RXMZ-S2.0/5 | SUS304 | 2 | 5.0 | RC 1-1/4" |
| RXMZ-S4.0/2.5 | SUS304 | 4 | 2.5 | RC 1-1/2" |
| RXMZ-S4.0/5.0 | SUS304 | 4 | 5.0 | RC 1-1/2" |
| RXMZ-S6.0/2.5 | SUS304 | 6 | 2.5 | RC 1-1/2" |
| RXMZ-S6.0/5.0 | SUS304 | 6 | 5.0 | RC 1-1/2" |
| RXMZ-S10/5.0 | SUS304 | 10 | 2.5 | RC 2" |
| RXMZ-S12/5.0 (double diaphragm) | SUS304 | 12 | 2.5 | RC 2" |
| RXMZ-L0.15/2.5 | SUS316L | 0.15 | 2.5 | RC 1/2" |
| RXMZ-L0.35/2.5 | SUS316L | 0.35 | 2.5 | RC 1/2" |
| RXMZ-L0.35/5.0 | SUS316L | 0.35 | 5.0 | RC 1/2" |
| RXMZ-L0.6/2.5 | SUS316L | 0.6 | 2.5 | RC 3/4" |
| RXMZ-L0.6/5.0 | SUS316L | 0.6 | 5.0 | RC 3/4" |
| RXMZ-L1.0/2.5 | SUS316L | 1 | 2.5 | RC 1" |
| RXMZ-L1.0/5.0 | SUS316L | 1 | 5.0 | RC 1" |
| RXMZ-L2.0/2.5 | SUS316L | 2 | 2.5 | RC 1-1/4" |
| RXMZ-L2.0/5.0 | SUS316L | 2 | 5.0 | RC 1-1/4" |
| RXMZ-L4.0/2.5 | SUS316L | 4 | 2.5 | RC 1-1/2" |
| RXMZ-L4.0/5.0 | SUS316L | 4 | 5.0 | RC 1-1/2" |
| RXMZ-L6.0/2.5 | SUS316L | 6 | 2.5 | RC 1-1/2" |
| RXMZ-L6.0/5.0 | SUS316L | 6 | 5.0 | RC 1-1/2" |
| RXMZ-L10.0/5.0 | SUS316L | 10 | 2.5 | RC 2" |
| RXMZ-A0.35/2.5 | Carbon steel | 0.35 | 2.5 | RC 1/2" |
| RXMZ-A0.35/5.0 | Carbon steel | 0.35 | 5.0 | RC 1/2" |
| RXMZ-A0.35/10 | Carbon steel | 0.35 | 10.0 | RC 1/2" |
| RXMZ-A0.6/2.5 | Carbon steel | 0.6 | 2.5 | RC 3/4" |
| RXMZ-A0.6/5.0 | Carbon steel | 0.6 | 5.0 | RC 3/4" |
| RXMZ-A0.6/10 | Carbon steel | 0.6 | 10.0 | RC 3/4" |
| RXMZ-A1.0/2.5 | Carbon steel | 1 | 2.5 | RC 1" |
| RXMZ-A1.0/5.0 | Carbon steel | 1 | 5.0 | RC 1" |
| RXMZ-A1.0/10 | Carbon steel | 1 | 10.0 | RC 1" |
| RXMZ-A2.0/2.5 | Carbon steel | 2 | 2.5 | RC 1-1/4" |
| RXMZ-A2.0/5 | Carbon steel | 2 | 5.0 | RC 1-1/4" |
| RXMZ-A4.0/2.5 | Carbon steel | 4 | 2.5 | RC 1-1/2" |
| RXMZ-A4.0/5.0 | Carbon steel | 4 | 5.0 | RC 1-1/2" |
| RXMZ-T0.35/1.0 | PVDF | 0.35 | 1.0 | RC 1/2" |
| RXMZ-T0.6/1.0 | PVDF | 0.6 | 1.0 | RC 3/4" |
| RXMZ-T1.0/1.0 | PVDF | 1 | 1.0 | RC 1" |
| RXMZ-T2.0/1.0 | PVDF | 2 | 1.0 | RC 1-1/4" |
| Other unspecified model/material/connection can be customized according to requirement. | ||||
