Why choose RAM Air Operated Double Diaphragm Pumps (AODD) for your demanding applications?

The Stainless steel pumps are available in either #304 or #316 Stainless steel.

They are available in five sizes. 1″Inch (25mm) 11/2″Inch (40mm) 2″Inch (50mm) and 3″Inch (80mm)


Overall improved efficiency.


Ranging from 157 l/min to 1000l/min


Pump has a solid centre block design with a lube free air valve design. Single piece, Multi ported Suction/Discharge manifold with BSP thread.


Modular Air Valve

Lube and stall free valve with fewer moving parts.

One-Piece Centre Section

Design Eliminates air leaks and provides more efficient operation.

Longer Diaphragm Life

Up to 5x longer diaphragm life for less maintenance and downtime

Multiple Ports

Increased number of ports for installation flexibility

Key Fluids

  • Chemicals
  • Acids
  • Corrosive and abrasive fluids
  • Lubricants, oil and fuel
  • Sludge, slurry and wastewater
  • Soaps, detergents and solvents.

Choose from a wide selection of materials to handle various

applications, including corrosive and abrasive fluids.

Model Description: RAM50B Aluminium Air Operated Double Diaphragm Pump

Part number: RAM50B SS-HY/HY/HY

         RAM = Series 

                  50 = 2” (50mm) suction/discharge

                           B = BSPT

threaded suction/discharge connections

                           F = Flanged

Flanged suction/discharge connections

                                    SS = Stainless steel construction

                                             HY = Hytrel diaphragms

                                                      HY = Hytrel balls

                                                               HY = Hytrel seats

We offer a variety of materials to adapt the internal parts to meet the customers requirements.

Diaphragm option include, HYTREL, Neoprene, Viton, EPDM, Santoprene and Buna-N.