Minichem PTFE Pump

Minichem Minichem PTFE Pump

The Minichem is a totally unique design of FDA Compliant PTFE Double Diaphragm Pump machined from one solid block of PTFE, removing the need for separate manifolds.

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Key Features
  • One-Block technology without separate manifolds ensuring greater pump integrity
  • One Nut technology for ease of maintenance
  • suitable for aggressive chemical duties at flow rates up to 100 ltr/minute and temperatures up to 80ºC
  • flanged as well as threaded connections available in 1/2” and 1” sizes – so compatible with existing PTFE-lined pipework
  • all external parts in Polypropylene or Stainless Steel
  • ATEX approved PTFE / Teflon and anti-static PTFE versions where required (FDA approved anti-static) ATEX Directive compliant up to Gas Group IIC
  • self-priming, suction lift (2m/6.5ft dry and 8m/26ft wet)
  • easy maintenance of air valve when pump in-line

Minichem One-Block technology delivers outstanding benefits, all of which help to:

  • maintain levels of safety in hazardous environments and operations
  • reduce down time and cleaning costs
  • keep operations running and cost-efficient

A PTFE / Teflon double diaphragm pump designed specifically for the safe transfer of aggressive chemicals and other hazardous liquids, at flow rates up to 100 litres/minute through 1/2” and 1” connections.

The Minichem is machined from one solid block of PTFE; a unique patented concept based on Flotronic’s existing One Nut air operated double diaphragm design. A key benefit of the ‘One-Block’ design is that it avoids the need for separate manifolds. This means no manifold seals and therefore no potential leak paths.

Flotronic’s ‘One-Block’ approach enhances the ease of maintenance benefit which the ‘One-Nut’ design delivers. The pump is held together by one nut on the side opposite the external air valve – allowing in-line diaphragm replacement in less than 15 minutes and a complete strip-down and re-build possible in less than 20 minutes. One-Block means that Minichem maintenance need focus only on One-Nut disassembly … and on the ball valves only when necessary.

Flanged as well as threaded BSP versions of the ‘Minichem’ are available, ensuring full compatibility with existing PTFE-lined pipework.

All non-wetted ‘Minichem’ parts are in Polypropylene and Stainless Steel and ATEX approved versions are also available in both FDA approved PTFE and anti-static PTFE. With environmental protection in mind, Diaphragm Rupture Protection and fully pneumatic Alarm Systems are available.


  • chemical, pharmaceutical and similar industries
  • pilot plants (often in sampling lines)
  • emergency pumps for hazardous chemical recovery.

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