CONSTRUCTIONAL DESIGN OF RM-TYPE PUMPS

The rear casing hermetically seals the pump chamber from the driving motor. The driving magnet rotating outside the rear casing transmits the torque of the motor to the inner magnet and thus to the impeller. The impeller is supported by sleeve bearings and a centering shaft made of high-purity oxide ceramic (99.7 %). Thus the bearing is extremely resistant to wear. The use of other bearing materials is possible.

To cool and lubricate the sleeve bearings, part of the fluid delivered passes the impeller and enters the gap between the inner magnet und the rear casing. After flowing through the sleeve bearings, the fluid leaves the casing through special lubricant grooves in front of the impeller.

Fluids delivered: Acids, bases and mixtures Solvents Alkaline degreasing baths Electroplating baths Foto chemicals Radioactive, aseptic and precious liquids Food stuffs Other low-viscosity fluids	Fields of application: Electroplating Etching and cleaning plants Refrigerating machines Solar systems Sewage and water treatment Foto industry Textile and food industries, etc.
Whatever you want to deliver, we have the right pump for you.
CHOICE OF MATERIALS
Metal-free and all-plastic making of our pumps is standard since this design guarantees best protection from corrosion. Housings may be also made of special stainless steel. We offer the right combination of materials for any fluid to be delivered, depending on its temperature. The following materials are available:
Component symbol material temperature  All components  that are in contact  with the fluid  PP  polypropylene  -20 to + 80°C  PVDF  polyvinylidene fluoride  -20 to + 95°C  PPS  polyphenylene sulphide  -20 to + 100°C  stainless steel  1.4305, 1.4571  -20 to + 100°C  oxide ceramic  aluminium oxide 99.7 %  -20 to + 100°C  PTFE graphite  PTFE graphite  -20 to + 100°C  Gaskets  EPDM  ethylene-propylene-diene rubber -15 to + 100°C  FPM, FKM  fluorinated rubber -20 to + 100°C  FEP coated  perfluoroethylene/propylene copolymer -20 to + 100°C  NBR  nitrile-butadiene rubber -20 to + 100°C

RM building group 1.5