The Verderair VA25-HP is a single acting, air operated,2:1 high pressure diaphragm pump (AODD) suitable for charging filter presses.

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The Verderair high pressure series is especially suitable for charging filter presses. The higher the pressure that is achieved, the dryer and therefore lighter the filter cake will be. This results in cost savings of disposal of the filter cake. Verderair high pressure pumps are constructed to be self-regulating for filter press feeding. The high pressure pumps can run dry safely, will not over pressure, has an excellent self priming capability and is very easy to start up.

Diaphragm Pumps

The Verderair diaphragm pumps are the best solution for transfer applications that require more than just fluid to be handled. The range is excellent for viscous or sticky media, slurry and solids. The Verderair diaphragm pump series offers diaphragm pumps, varying in material (metallic, non-metallic, conductive) to drive principle (electric, pneumatic). Applications are found in chemical industry, pharmaceutical industry, solar power industry, waste water treatment, ceramic slurry, and many more. Special models are available for ATEX, food and pharma applications.

Max. flow 94 l/min
Max. discharge pressure 17,2 bar
Air conn. 1/2" BSP/NPT
Liquid conn. 1" BSP/NPT
Maximum suction lift (dry) 4,9 m wc
Certificates ATEX 
Maximum suction lift (wet) 8,8 m wc
Max. particle size 3,2 mm
Viscosity 10000 mPa.s
Max. temperature 135 °C
Materials liquids parts Aluminium, Stainless Steel
Materials valves seats Acetal, Aluminium, Buna N, Geolast, Polypropylene, Kynar(PVDF), Hytrel, Santoprene, Stainless Steel, Viton
Materials valve balls Acetal,Buna N, Geolast, Hytrel, Santoprene, Stainless Steel, Viton, PTFE, Neoprene, Weighted Neoprene
Materials diaphragms PTFE (2 piece), PTFE (overmolded), Hytrel, Buna-N, Santoprene, Viton, Geolast, Neoprene (overmolded)
Material center section Polypropylene, Aluminum, Conductive Polypropylene