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 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.
Model | Volume（L) | Pressure(MPa) | Valve body(MM) | Shell diameter(MM) | Connection | Material |
| RXMZ-P0.15/1.0 | 0.15 | 1.0 | 207 | 124 | RC1/2" | PVC/PP/PVDF |
| RXMZ-P0.35/1.0 | 0.35 | 1.0 | 227 | 140 | RC 1/2" | PVC/PP/PVDF |
| RXMZ-P0.6/1.0 | 0.6 | 1.0 | 245 | 170 | RC 3/4″ | PVC/PP/PVDF |
| RXMZ-P1.0/1.0 | 1.0 | 1.0 | 273 | 215 | RC 1″ | PVC/PP/PVDF |
| RXMZ-P2.0/1.0 | 2.0 | 1.0 | 320 | 260 | RC 1-1/4″RC 1-1/2″ | PVC/PP/PVDF |
| RXMZ-P4.0/1.0 | 4.0 | 1.0 | 340 | 310 | RC 2″ | PVC/PP/PVDF |
| RXMZ-S0.15/2.5 | 0.15 | 2.5 | 207 | 124 | RC1/2" | 304/316L/HC276 |
| RXMZ-S0.35/2.5（5.0） | 0.35 | 2.5 | 227 | 140 | RC 1/2″ | 304/316L/HC276 |
| RXMZ-S0.35/10 | 0.35 | 10 | 227 | 147 | RC 1/2″ | 304/316L/HC276 |
| RXMZ-S0.6/2.5（5.0） | 0.6 | 2.5 | 245 | 170 | RC 3/4″ | 304/316L/HC276 |
| RXMZ-S0.6/10 | 0.6 | 10 | 245 | 177 | RC 3/4″ | 304/316L/HC276 |
| RXMZ-S1.0/2.5（5.0） | 1 | 2.5 | 273 | 215 | RC 1″ | 304/316L/HC276 |
| RXMZ-S1.0/10 | 1 | 10 | 273 | 218 | RC 1″ | 304/316L/HC276 |
| RXMZ-S2.0/2.5（5.0） | 2 | 2.5 | 320 | 260 | RC 1-1/4″ | 304/316L |
| RXMZ-S4.0/2.5（5.0） | 4 | 2.5 | 340 | 310 | RC 1-1/2″ | 304/316L |
| RXMZ-S6.0/2.5（5.0） | 6 | 2.5 | 345 | 352 | RC 2″ | 304/316L |
| RXMZ-S10/2.5 | 10 | 2.5 | 400 | 418 | RC 2″ | 304/316L |
| 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 |
