PNEUMATIC PUMPS FOR CORROSIVE LIQUIDS

PLASTIC DOUBLE-DIAPHRAGM PUMPS

Air-powered double diaphragm chemical pumps made from thermoplastic

DOUBLE-DIAPHRAGM CHEMICAL PUMPS POWERED BY COMPRESSED AIR. IDEAL FOR: DENSE AND VISCOUS INDUSTRIAL LIQUIDS, ABRASIVE FLUIDS, AGGRESSIVE CHEMICALS, RESINS, PAINTS, ENAMELS, INKS, DYES, FUELS, OILS. MADE OF CORROSION-RESISTANT THERMOPLASTIC (PP, ECTFE, PVDF).

  • Corrosion-resistant chemical pumps.
  • Plastic construction materials: PP, PVDF, ECTFE.
  • Maximum flow rate: 800 l/min.
  • Maximum head: 80 m w.c.
  • Maximum air pressure: 8 bar.
  • Powered by non-lubricated compressed air.
  • Suitable for dry running.
  • ATEX Zone 2 certification: standard for all models.

TECHNICAL INFORMATION

Q max l/min Connections Ø max solids Max viscosity Negative suction head Link
Liquid Air
BX5 6 G1/4 f G1/8 f - 800 cps 3 m max more
BX7 9 G1/4 f G1/8 f 0.5 mm 8.000 cps 4 m max
BX13 16 G3/8 f G3/8 f 0.5 mm 10.000 cps 3 m max
BX15 17 G3/8 f G3/8 f 0.5 mm 15.000 cps 4 m max
BX30 35 G1/2 f G1/4 f 2 mm 20.000 cps 4 m max
BX50 60 G1/2 f G3/8 f 4 mm 20.000 cps 4 m max
BX81 110 G1 f G3/8 f 4 mm 25.000 cps 4 m max
BX100 160 G1 f G3/8 f 4 mm 30.000 cps 4 m max
BX150 220 G1 1/4 f G1/2 f 5 mm 40.000 cps 4 m max
BX251 340 G1 1/2 f G1/2 f 6 mm 50.000 cps 4 m max
BX522 600 G2 f G1/2 f 8 mm 50.000 cps 5 m max
BX503 800 G3 f G3/4 f 10 mm 50.000 cps 4 m max

BX series pumps are powered by a maximum air pressure of 8 bar. Performances refer to tests with cold, clean water with a density of 1000 kg/m3 (ISO9906) and to pumps with immersed suction and free delivery outlet.

STRENGTHS

VOLUMETRIC PUMPS

The BX AODD pump is a volumetric pump with pulsating flow rate. Two pairs of diaphragms inside them generate compression and depression: in this way the pump simultaneously creates vacuum (suction) and pressure (pumping).

THE ACCESSORIES

Three different delivery/suction positions. Possibility of split manifolds (two suctions and two deliveries). Optional features: automatic pulsation dampers, air adjustment kit, coupling flanges.

Air-driven double diaphragm pumps with no electrical components

DIAPHRAGMS AND BALLS

Pump materials: anti-acid plastic (PP, PVDF, ECTFE). Diaphragm materials: plastic (HYTREL, SANTOPRENE), rubber (NBR, EPDM), PTFE. Ball materials: PTFE, AISI 316, EPDM, NBR.

ATEX COMPLIANT

Standard material for all models: non-conductive thermoplastic (ATEX Zone 2 version). Special series by request: conductive plastic material filled with carbon fibre (ATEX Zone 1 version).

STRENGTHS

VOLUMETRIC PUMPS

The BX AODD pump is a volumetric pump with pulsating flow rate. Two pairs of diaphragms inside them generate compression and depression: in this way the pump simultaneously creates vacuum (suction) and pressure (pumping).

THE ACCESSORIES

Three different delivery/suction positions. Possibility of split manifolds (two suctions and two deliveries). Optional features: automatic pulsation dampers, air adjustment kit, coupling flanges.

Air-driven double diaphragm pumps with no electrical components

DIAPHRAGMS AND BALLS

Pump materials: anti-acid plastic (PP, PVDF, ECTFE). Diaphragm materials: plastic (HYTREL, SANTOPRENE), rubber (NBR, EPDM), PTFE. Ball materials: PTFE, AISI 316, EPDM, NBR.

ATEX COMPLIANT

Standard material for all models: non-conductive thermoplastic (ATEX Zone 2 version). Special series by request: conductive plastic material filled with carbon fibre (ATEX Zone 1 version).

Corrosion-resistant plastic and rubber components with no metal in contact with the liquid

CHEMICALLY RESISTANT DIAPHRAGMS

There are two pairs of diaphragms inside the BX Air-Operated Double Diaphragm pumps (AODD pumps) and these are the elements subject to the greatest stress during suction and pumping (both at chemical and mechanical level). The diaphragms are designed to redistribute the load, minimising the yielding of the material. The possible anti-acid and wear-resistant configurations are: plastic (Hytrel, Santoprene), rubber (NBR, EPDM) or PTFE.

LEARN MORE

THERMOPLASTIC MATERIALS

Acid-resistant AODD pumps available in polypropylene for aggressive fluid applications

PP (POLYPROPYLENE)

The most widely used thermoplastic polymer for the construction of corrosion-resistant pneumatic pumps. It offers good resistance to most acid and alkaline solutions and can be used, depending on the concentration of the aggressive liquids, at temperatures of approximately 65-70°C max.

PVDF air-driven double diaphragm pumps for dangerous chemicals and highly aggressive liquids

PVC (POLYVINYL CHLORIDE)

Fluorinated thermoplastic with exceptional resistance to corrosion and temperature. PVDF covers a wide range of uses but is ideal for highly concentrated acids. It is not suitable for certain inorganic bases, such as caustic soda. Operating temperature: max. 100°C

TYPICAL APPLICATIONS

  • Chemical and petrochemical systems
  • Pumping solvents, oils, lubricants
  • Handling fuels
  • Emptying cisterns and tanks
  • Treatment of dense or abrasive fluids
  • Assembly in painting lines
  • Transferring solutions for printed circuit boards
  • Use on service platforms
  • Pumping slurries, pastes, resins
  • Seawater treatment
  • Electroplating baths, pickling, galvanisation
  • Feeding rotary machines
  • Handling inks
  • Loading and unloading chemicals
Air-powered AODD pumps with compact construction for uses in limited spaces

TYPICAL APPLICATIONS

  • Chemical and petrochemical systems
  • Pumping solvents, oils, lubricants
  • Handling fuels
  • Emptying cisterns and tanks
  • Treatment of dense or abrasive fluids
  • Assembly in painting lines
  • Transferring solutions for printed circuit boards
  • Use on service platforms
  • Pumping slurries, pastes, resins
  • Seawater treatment
  • Electroplating baths, pickling, galvanisation
  • Feeding rotary machines
  • Handling inks
  • Loading and unloading chemicals

AODD PUMPS: OTHER FEATURES

Polypropylene air-operated double diaphragm pump for hydrochloric acid scrubber

BX membrane pumps are perfect for some extreme applications involving the handling and dosing of industrial liquids and corrosive chemicals. They are designed to work even with high viscosities and suspended solids. Moreover, use in very humid or explosive environments, the self-priming capability from high suction heights, the possibility to fine tune the speed and for dry pumping means that these pumps have unprecedented levels of versatility. Their pneumatic motor is self-lubricating: it must be fed by oil-free, filtered, dried, non-lubricated air. The pressure of the air supply must be between 2 and 8 bar. Unfortunately, a certain amount of noise and a pulsating flow rate are almost unavoidable characteristics: but when there is no alternative, these AODD pumps do their job very well.

KEY CORROSIVE LIQUIDS

Corrosion proof double diaphragm pumps for chemical transfer
  • Nitric acid
  • Muriatic acid
  • Citric acid
  • Brine
  • Ammonia
  • Caustic potash
  • Chemical fertilisers
  • Fertilisers
  • Glycerine, glycol
  • Fuels and biodiesel
  • Solvents of various kinds
  • Seawater
  • Sulphuric acid
  • Caustic soda
  • Hydrochloric acid
  • Sodium hydroxide
  • Chromic acid
  • Sodium hypochlorite
  • Hydrofluoric acid
  • Ferric chloride
  • Aluminium polychloride
  • Phosphoric acid
  • Acetic acid
  • Flocculants, polyelectrolytes
  • Urea and AdBlue
  • Sanitising gels
  • Inks, dyes, paints
  • Vegetable and industrial oils
  • Cosmetic liquids
  • Industrial detergents
  • Distilled water
  • Demineralised water
  • Hydrogen peroxide
  • And your liquid, of course!

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