Magnetically coupled centrifugal pumps Type RM 4

Magnetically coupled centrifugal pumps of building group 4 are non-self-priming centrifugal pumps with volute casing. They operate in horizontal position and are built in monobloc design. A magnetic coupling connects the pump to the electromotor and transmits the power of the motor to the impeller.

Type RM 4

Constructional design

Housing, impeller, impeller magnet coating and rear casing are made of either glass-fibre reinforced PP plastic or PVDF or stainless steel. Sleeve bearings, starting rings and centering shaft are made of 99.7% pure oxide ceramic. The impeller starting ring is made of PTFE graphite. O-ring sealing of the housing is made of FPM or EPDM or FEP (optionally available).

  • For aggressive and neutral liquids
  • For short-term and continuous operation

The pump is available in:

  • PP, PVDF, stainless steel
  • Pump sizes 9/350 | 18/240 | 20/300 | 24/340 | 27/400 | 30/400 | 35/200

Motor:

  • 230/400V three-phase motor, 0.75 to 4.0kW, 50 Hz, insulation class F, protection class IP 54 motor speed 2,900min-1
    – Other voltages and frequencies are available on request. –

Weight:

  • approx. 37 to 84 LBS

Fluid temperature range:

  • PP -4° to +176°F
  • PVDF -4° to +203°F
  • steel -4° to +203°F

Pressure range: **

  • PP up to 72.5 PSI
  • PVDF up to 87 PSI
  • steel up to 87 PSI

Position of terminal box:

  • vertical position is standard
  • positions turned to the right or the left are possible

Position of discharge port:

  • vertical position is standard
  • differing positions of 12x30° are possible

Ports acc. to German DIN 8063 standard:

  • suction port: d50/DN40 - G2¼
  • discharge port: d40/DN35 - G2

Accessories (optional):

  • explosion-proof motor
  • ac motor of up to 1.1kW
  • three-phase motor with frequency converter
  • motor circuit-breaker for 230/400V three-phase motor
  • flanges
  • non-return valve
  • three-piece hose connection (incl. hose nipple, spigot nut and O-ring)

* To deliver liquids with a higher relative density, we also offer all our pumps with smaller impeller diameters which, however, reduce delivery rates and heads of the pumps. If in doubt, please consult us.

** Maximum system pressure depends on the temperature of the fluid delivered.

Magnetically coupled centrifugal pumps