PP pumps

PP is the acronym for polypropylene, a semi- crystalline thermoplastic polymer belonging to the polyolefin group. Polypropylene is produced from propene by polymerization. Polypropylene shows a visco-elastic behaviour at room temperature.

PP is defined by a density of 0.895 g/cm³ to 0.92 g/cm³. It is therefore the lightest thermoplastic. Its main advantage is its excellent chemical stability.

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

PP has the following properties:

- satisfactory general strength

- satisfactory toughness

- satisfactory impact strength

- suitable for service temperatures between 0 – 100°C

- excellent weldability

- satisfactory corrosion resistance

- moderate stress cracking resistance

- satisfactory wear resistance

- satisfactory cavitation behaviour

- usually grey in colour

PP features good resistance to the greater part of low- and medium-strength acids and caustics. Moreover, it is resistant to salt solutions and lends itself as a pump material for many polar organic liquids.

Pumps fabricated from PP are excellently suited for pumping tasks in the chemical industry, in electro-plating plants, the metallurgical industry, steel and stainless steel pickling lines, evaporation and regeneration systems, flue gas and exhaust air cleaning systems and in waste water treatment.

Vertical submerged pumps are also available in this material. The submerged pumps are available for both wet end and dry end arrangement.

The pumps are also suited for use in explosive atmospheres (ATEX) and meet the requirements of EU Directive 94/9/EC.

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