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  • Flotronic 14" Slimline

  • Exploded View

  • Flotronic 14" Slimline

Air-Operated Double-Diaphragm Pumps

Flotronic® Slimline Pump

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.

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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®.
  • ATEX Directive compliant up to Gas Group IIC.


Machined from solid billet, with a choice of solid Aluminium, stainless steel or exotic metals including Hastelloy® and Duplex 22. Flotronic’s fully drainable Slimline Air-Operated Double-Diaphragm pumps can be used in a wide range of industries for any liquid transfer, including chemical, cosmetic, paints and coatings, pharmaceutical, adhesive, food and beverage, sanitary and hygienic applications. They have proved particularly effective in the hygienic transfer of viscous products such as cosmetics and foodstuffs including dairy products and mayonnaise. These pumps are manufactured from FDA-approved materials and are especially suited to applications where hygiene is paramount and where the avoidance of product hold-up is important.



Looking to quickly compare the features and benefits of different pump styles, to find the right one for your application? The Unibloc comparison chart is a great place to start.
Hygienic Pump Comparison Chart

Flotronic’s Slimline pumps may be more compact than competitor AODD pumps, but they’re just as capable - offering all the benefits for which Flotronic pumps are renowned, including Flotronic’s innovative, easy-maintenance, One Nut hygienic design which allows pump maintenance in a matter of minutes.


  • Ideal for applications such as chemical, cosmetics and personal care, paints, pharmaceutical, adhesive, hygienic, food and beverage.
  • Crevice-fee design with no internal welding - ideal for hygienic applications and cleaning
  • Fully drainable body
  • 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. All of which help you to:
    • Reduce down time and cleaning costs
    • Maintain and even improve on hygienic and sanitary levels on site.


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Flotronic® Slimline 14” Air-Operated Double-Diaphragm Pump

Case Studies

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Double Diaphragm Pump Transferring Kimchi Sauce

A Japanese food manufacturer transferring Kimchi Sauce with Rotary Pumps were having a problem with stainless steel particles caused by stainless steel friction within their Rotary Pump. Metal detectors

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When You Need To Pump Solvents Safely

An international producer of flexible printed packaging needed to pump solvents safely at one of their plants in the UK. The pumps were needed in an ATEX rated area, and

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How Do I Pump The Correct Weights

European ready meal manufacturer were having problems with incorrect weights of product going into their mixing vessels at one of their 3 plants in the UK. One of the accessories available

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Pump Acetone To Aerosol Filling Head

International aerosol filler / manufacturer with plants all over Europe needed ATEX certified pumps to pump acetone from IBCs to volumetric filling heads. Their existing piston pump suffered from constant

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How To Pump Paint To A Filling Head

One of the Top 10 decorative paint manufacturers in the World, needed to pump water based decorative paints from their storage tanks to filling lines at one of their plants

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Flotronic Pulsation Damper On Homogenizer Application

A global soft drinks manufacturing company – for whom Flotronic Pumps Ltd are the preferred Air-Operated Double-Diaphragm pump supplier – came to Flotronic with a non-Air-Operated Diaphragm Pump

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How To Pump Oils Creams And Gels In The Cosmetics Industry

Leading contract cosmetics manufacturer based in the UK working with many of the leading Global health and beauty brands, needed a reliable and safe method for pumping the many and

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Flotronic Pump Zinc Oxide Slurry Successfully

United Stated based pharmaceutical ingredient manufacturer in Rochester, NY had severe issues pumping a zinc oxide / water slurry. The traditional AODD design pump was being overhauled or replaced a minimum

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Hygienic Diaphragm Pump For Sauce And Relish Transfer

A UK sauce manufacturer who is a supplier to one of the world's most popular fast food chains, has been able to speed up its filling process using a fast maintenance,

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Fast Strip-down Easy Clean Diaphragm Pumps

UK based laboratory with expertise in the development and manufacture of branded products for the pharmaceutical, toiletry and household markets. Specialising in liquids, lotions, creams, gels, suspensions and alcohol-based formulations;

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Hygienic Double Diaphragm Pump Transferring Essential Oils

As a result of seeing an advert for the 'One Nut' AODP from Flotronic Pumps Ltd, an international essential oils manufacturer based in the UK were impressed with the simplicity of

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How To Pump Tomato Pizza Toppings

Well know pizza manufacturing company were planning their new pizza factory in the UK, they turned to Flotronic Pumps to pump their range of tomato toppings and as a result have

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Double Diaphragm Pump Offering In-line Maintenance

Zotefoams PLC manufacture a range of closed cell crosslinked polyolefin foams using a unique, environmentally friendly, nitrogen expansion process. Switching from traditional designed double diaphragm pumps to the 'One Nut' fast

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Need to Pump Paint and Lacquers

When Schefenacker Vision Systems UK Ltd, a major producer of car door mirrors, were looking to improve their Paint Kitchen they trialed a "One Nut" Air-Operated Double-Diaphragm Pump

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Pump Glucose And Syrup For Cereal Bar Production

UK leading cereal bar producers has recently expanded their production of cereal bars by investing in a new production facility at a cost of between Euro 5 and 6 million

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Pump Fruit Puree With A Diaphragm Pump

Sunjuice Ltd, part of the Jamaica Producers Group, is the European market leader in freshly squeezed juices, crushes and smoothies. Essential to their success has been the importance of supplying

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Complementary Products

One-Nut Double Diaphragm Pump Accessories

A wide range of additional accessories and customization options to ensure your Flotronic® One-Nut pump meets your application requirements.

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Hygenitec strainers are precision-engineered to pharmaceutical-grade standards and are available in 316L stainless steel or Hastelloy, with in-line cleaning capabilities.

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Y-strainers include an in-line system that allows workers to clean the strainer without removing it from the piping, assuring safety while also giving bi-directional flow and 360-degree equipment mounting choices.

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Butterfly Valves

Precision machined from solid stock, our butterfly valves accommodate a multitude of applications. A snap to install and maintain, these valves can be tailored with elastomer options and fully actuated versions to meet your individual demands.

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Pressure Relief Valves

Our SimpleSet design has made Hygenitec pressure relief valves the premier choice for over 25 years. Our hygienic pressure relief valves are fully adjustable with a multitude of pressure choices, combining versatility with an easy-to-operate design.

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Bulls-Eye Sight Glasses

The two solid glass viewports on opposing sides of our 316L stainless steel Bulls-Eye sight glass enable the flexibility to position the equipment as needed.

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Check Valves

Check valves from Hygenitec are designed to guarantee effective, positive sealing. Our time-tested design featuring fully machined stainless housing and seamless ports confirms our commitment to sanitary design.

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In-Line Sight Glasses

Hygenitec in-line sight glasses are designed with a glass tube securely positioned between two flanges, with double-nut tensioning to prevent over-tightening, and an electropolished stainless steel protector around the tube as well as a standard sanitary Tri-Clamp connection.

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