PFA pumps 

PFA is the acronym for perfluoroalkoxy, a copolymer consisting of (TFE) and perfluorovinylmethylether (PPVE). It differs from the PTFE resins in that it is melt-processable using extrusion, welding and injection moulding techniques.

PFA has low strength and hardness. It features virtually universal chemical resistance, excellent temperature stability and is flame-resistant. PFA has a very low coefficient of friction, is largely inert, highly resistant to adhesive wear and has extremely good adhesion resistance.

PFA is typically used in the manufacture of hosing and fittings for chemically aggressive service environments and as an anti-corrosion liner in chemical plant equipment. PFA-liners on unalloyed steel or FRP components offer an alternative to nickel-based materials such as Hastelloy, Inconel or Monel.  In the chemical engineering industry, PFA is typically used for chemical pumps, gas scrubbers, reactors, tanks, piping and centrifuges. PFA-lined gas scrubbers are usually resistant to halogens.

These properties combined with close to 50 years’ experience with engineering plastics at Munsch translate into excellent resistance to aggressive and especially abrasive media of our PFA pumps and hence, into a broad application range.

The properties of PFA are largely similar to those of PTFE, e.g. 

-          very broad service temperature interval ranging from – 240°C to 260°C

-          weather- and UV-resistant 

-          physiologically safe within its service temperature interval 

-          very good slip properties

-          very good anti-adhesion behaviour

-          virtually universal corrosion resistance

-          non-combustible

As against PTFE, PFA exhibits satisfactory weldability, better workability and a higher diffusion tightness.

The material can be processed by extrusion and transfer moulding, thus allowing the manufacture of parts of complex geometry.   

Because of its moderate strength properties and relatively low melt flow rate, PFA is predominantly used as a liner material.

Pumps fabricated from PFA are excellently suited to pumping tasks in the chemical industry, pharmaceutical industry, food processing industry and in electro-plating applications.  

PFA pumps are used in virtually all production sectors of the chemical process industry. Their applications can be broadly classified into the following areas: bulk chemicals, fine chemicals, biotechnology, pharmaceutical technology, product refining, organic chemistry, inorganic chemistry, chemical engineering, electrolysis and acid recovery.  

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