Type RM 2

Magnetically coupled centrifugal pumps of building group 2 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.

Constructional design

Housing, impeller, impeller magnet coating and rear casing can be made of either glass-fibre reinforced PP plastic or PVDF. Sleeve bearings, starting ring and centering shaft are made of 99.7% pure oxide ceramic. 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
• With non-ventilated motor so that it is insensitive to vapour.

The pump is available in:

• PP, PVDF
• Pump sizes 5/50 | 8/60 | 10/100 | 10/110

Motor:

• 230/400V three-phase motor or
• 230V single-phase ac capacitor start-and-run motor, 90 to 250 watts, 50 Hz, insulation class F, protection class IP 55 motor speed 2,850min-1
  – Other voltages and frequencies are available on request. –

Weight:

• approx. 4.0 to 7.5 kg

Fluid temperature range:

• PP -20° to +80°C
• PVDF -20° to +95°C

Pressure range: **

• PP up to 2.5 bar
• PVDF up to 3.5 bar

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 6x60° are possible

Ports acc. to German DIN 8063 standard:

• suction port: d25/DN20 - G 1¼
• discharge port: d25/DN20 - G 1¼

Accessories (optional):

• explosion-proof motor (only with 180 and 250 watts capacity)
• motor circuit-breaker for 230/400V three-phase current
• connection cable 5m long with CEE-plug
• pilotherm for 230V ac
• ON/OFF switch with connection cable 2.5m long and plug for 230V ac
• flanges
• flexible hoses
• 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.