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PDM Series Metal Pulsation Dampeners for AODD Pumps

All-Flo™ PDM Series Metal Pulsation Dampeners are recommended accessory products that help expand the application range and augment the performance of All-Flo Air-Operated Double-Diaphragm (AODD) Pumps. Installed at the pump’s discharge, All-Flo pulsation dampeners reduce fluid pressure and flow fluctuations to provide a smoother discharge flow. This function is critical in applications that need to minimize system vibration in order to protect and enhance the accuracy of downstream instrumentation. It also extends equipment life by reducing the load on the pump.

PDM Series Pulsation Dampeners are available in bolted metal construction and can be used in a wide range of aggressive applications.

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Features and Benefits

  • Provides steady discharge pressure and flow
  • Reduces physical vibration
  • Reduces load on the pump
  • Protects downstream instrumentation
  • Increases equipment life


  • Container filling
  • Metering and dosing
  • Food production
  • Paint, resins, and coatings
  • General industrial
  • Water and wastewater
  • Filtration
  • Ceramics
  • Semiconductor


Physical Specifications
Liquid Port Size: 1 in. 1-1/2 in. 2 in. 3 in.
Liquid Connection Types: MNPT, BSPT, and ANSI/DIN FLANGE (Only available in 3 in.)
Air Inlet Connection Size: 1/8 in. NPT 1/8 in. NPT 1/8 in. NPT 1/8 in. NPT
Air Exhaust: 1/8 in. NPT 1/8 in. NPT 1/8 in. NPT 1/8 in. NPT
Max Height: 6.8 in. (172 mm) 8.8 in. (224 mm) 8.8 in. (224 mm) 13.4 in. (340 mm)
Max Width: 10.8 in. (274 mm) 14.2 in. (361 mm) 14.2 in. (361 mm) 18.7 in. (474 mm)
Max Depth: 10.8 in. (274 mm) 14.2 in. (361 mm) 14.2 in. (361 mm) 18.7 in. (474 mm)
Wet End: 316 Stinaless Steel
Air End: 316 Stinaless Steel
Diaphragm: PTFE




Size: 1, 1-1/2, 2 and 3 inch | Code: ALF-14070-E-02

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