Flotronic air-operated double diaphragm pumps

Flotronic is a world leading manufacturer of Air-Operated Double Diaphragm Pumps and inventor of the revolutionary ‘One-Nut’ design. The pump is held together by one nut on the opposite side of the pump to the external air valve. This design allows in-line diaphragm replacement to be accomplished in less than 15 minutes, with a complete strip down and rebuild possible in less than 20 minutes. The benefits of choosing this pump design are that the fluid passes between the diaphragms directly through the centre of the pump with air pressure operating on the outside. This secures a longer diaphragm lifetime, and makes the pump easier to clean and maintain than the competitors’ products. All pumps are self-priming and capable of running dry, without harming the pump. Flotronic pumps are also available in a wide range of materials, for hygienic or corrosive applications, in ATEX and/or FDA compliant designs and with additional options (membrane rupture detector, cooling-heating jacket, stroke counter, tool-free installation, etc.). Spares can be supplied from stock in the UK.

Material selection, capacity

  • Body: Aluminum, PP, PVC, PVDF, 316 stainless steel, Hastelloy, other exotic metals, pure or antistatic PTFE

  • Diaphragm, seals: PTFE, EPDM, nitrile rubber

  • Pneumatic components, bases: painted carbon steel, stainless steel

  • max. 908 litres/minute, from ½" to 3" connection sizes

Advantages of Flotronic pumps

  • Long-life diaphragms: thanks to stroke length optimization, thicker and stronger PTFE-coated diaphragms are already part of the standard models. One-piece nitrile and EPDM membranes are also available.

  • Quick and easy maintenance: diaphragms can be replaced in 15 minutes, without disconnecting the pump from the pipework, by removing a single nut.

  • Spare parts: you need less than half the spare parts compared to a competitor’s pump of similar capacity. Pneumatic components of various types and models are interchangeable.

  • Does not require lubrication: a unique lubrication free air system incorporating a bolt-on air valve, including manual override buttons, eliminates costly internal air mechanisms and mid position stall normally associated with Double Diaphragm Pumps.

  • Reliable operation: the pump design ensures that potential leak paths are reduced to a minimum. Even under ATEX conditions pumps can be maintained in the hazardous area up to Zone 1 using anti-static materials.

  • Self-priming up to 3.6 m (in dry operation)

  • Handles highly viscous media

  • Can run dry

  • The product is subject to minimal shear stress

  • Suitable machines for clean, food industry applications

  • Pressure and flow can be easily regulated