Flotronic is a world leading manufacturer of air-operated Double Diaphragm Pumps and inventor of the revolutionary ‘one-nut’ design – a concept which has transformed the way they are being used throughout the industry.

The ‘One-nut’ Concept

The ‘inside out’ concept allows fluid to pass ‘between the diaphragms’, directly through the centre of the pump. Air pressure operates ‘on the outside’. The benefits are:

Longer lasting diaphragms

An optimised stroke length allows use of thicker / stronger PTFE faced diaphragms as standard. One-Piece Nitrile and EPDM diaphragms are also available.

Faster Maintenance 

Fifteen minutes to change diaphragms by the removal of just one nut and without disconnecting the pump from the pipework.

Lower cost spares

Less than half the quantity of spare parts than any equivalent pump and interchangeability of most air system parts between the different pump styles in our range.

Flotronic Brochure 

Double Diaphragm Pump ideal for pumping your food products, especially on high viscosity low shear applications. Designed for ‘quick strip’ which is tool free or the pumps can be ‘cleaned in place’ (CIP), manufactured throughout from FDA compliant approved materials. The ‘Good Food’ pump gives food industry customers very specific benefits.

Key Features

• The unique ‘One-Nut’ design which facilitates ‘between batch’ cleaning
• Clean-in-place (CIP) connection as standard
• Internal jacketing option, which allows the temperature of the product to be maintained as it passes through the pump
• An ability to self-prime – (3.6m dry and 8m wet).
• All ‘Good Food’ Pumps come with hygienic connections to suit the customer’s specific requirements
• Low shear rate – permitting handling of large or delicate solids
• Internal pump clearances allow for solids up to 25mm to pass through the pump
• The ability to dry run, making it possible to leave the pump running to completely empty the supply vessel
• Diaphragm pump capable of handling very high viscosity products up to and exceeding 300,000 centipoise (cP)
• Tool free maintenance allowing 15 minute Strip-down and rebuild by hand using the integral T Bar
• Polished option available.
• FDA compliant materials

A compact and self-draining Diaphragm Pump available in FDA approved 316L stainless steel, aluminium, Duplex 22, and Hastelloy®; used in an array of industries.

Key Features

• Compact hygienic design ideal when space is limited.
• FDA approved materials – 316L stainless, Duplex 22, Hastelloy.
• Outside surfaces can be easily cleaned.
• A range of surface finish is available up to 0.38Ra.
• A range of ½” to 3” connections, with 7”, 10”, 12” or 14″ diameter diaphragms, providing in-line adaptability.
• Screwed, hygienic or flanged connections to suit particular applications.
• Flotronic Pumps’ One-Nut technology.
• Readily accessible ball valves.
• Pump air-valve easy to maintain when in-line • a choice of materials to suit any application including Stainless Steel, Aluminium and also exotic metals including Hastelloy®.

Fabricated 316L stainless steel or Hastelloy® on all wetted metal parts offers unrivalled versatility. These FDA compliant Air-Operated Double-Diaphragm Pumps are used extensively throughout the industry.

Key Features

• Compact design ideal when space is limited
• Outside surfaces can be easily cleaned
• A range of ½” to 3” connections, with 10”, 14” diameter diaphragms, providing in-line adaptability
• Screwed, hygienic or flanged connections to suit particular applications
• Ease of maintenance through Flotronic Pumps’ ‘One-Nut’ technology
• Readily accessible ball valves
• Pump air-valve easy to maintain when in-line
• A choice of materials, 316L Stainless Steel, and Hastelloy®
• ATEX Directive compliant up to Gas Group IIC
• Surface finish to customer specification available with a range of polished options
• Optional hot water/steam jacket
• With environmental protection in mind, Diaphragm Rupture Protection and fully pneumatic alarm systems are available
• Optional high temperature diaphragm allows for a 135°C (275°F) maximum operating temperature
• Self-priming 3.6m/12ft dry and 8m/26ft wet.
• Flow Rates up to 680 ltr/min.

Designed with 3A in mind using FDA, USP Class VI and (EC) 1935/2004 approved materials; our range of Sanitary Diaphragm Pumps help maintain and improve hygienic conditions on your site.

Key Features

• Manufactured from FDA, USP Class VI.
• One Nut technology with fully drainable body for ease of maintenance throughout. Readily accessible ball valves with pump air-valve easily maintained when in-line
• Slimline design ideal where space is limited
• Outside surfaces can be easily cleaned
• Choice of materials including Stainless Steel and Hastelloy®
• Reduce downtime and cleaning costs.
• 3A accredited / tested range of Sanitary Pumps.
• Manufactured from FDA, USP Class VI and (EC) 1935/2004 (EC) 2013/2006 approved materials.
• Design based on our fully accredited Sanitary range of Air-Operated Double-Diaphragm Plus pumps.
• Fully drainable with or without pump inversion.
• With or without leak detection systems.
• Pumps can withstand CIP/SIP pressures up to 6 bar in the suction line
• Cleaned in Place using fully automated CIP units, no need to bypass
• Rupture detection system with alarm and instant shutdown to avoid product contamination
• All ‘H’ Series pumps are available with the option of BS, DIN or ISO hygienic connections.
• Standard finish of 0.8μm Ra or better on wetted surfaces with electro-polished overall finish to aid pump cleaning.