Single-stage glanded centrifugal pump in monobloc design for installation on a base. Low-vibration and low-noise monobloc design with lantern and rigidly connected standard motor. With force-flushed, bidirectional bellows mechanical seal (from 37 kW/4-pole and 45 kW/2-pole, optionally available with a cartridge mechanical seal in back pull-out design for mechanical seal replacement without dismantling the motor) and cavitation-reducing impeller. Flange with R 1/8 pressure measuring connections. Pump housing and lantern are cataphoretic-coated. Motors in IE3 technology as standard. Pump with motor ≥ 5.5 kW are equipped as standard with a PTC thermistor sensor for motor protection.

Operating data

• Fluid media
  Water
• Maximum operating pressure PN
  16 bar

Motor data

• Motor efficiency class
  IE3
• Mains connection
  3~400 V, 50 Hz
• Voltage tolerance
  ±10 %
• Rated power P₂
  250.0 W
• Rated speed n
  1450 rpm
• Rated current I_N
  0.57 A
• Power factor cos φ
  0.81
• Motor efficiency η_M 50%
  68
• Motor efficiency η_M 75%
  72.9
• Motor efficiency η_M 100%
  77.4
• Insulation class
  F
• Protection class
  IP55

Materials

• Pump housing
  5.1301, KTL-coated
• Impeller
  EN-GJL-200
• Shaft
  1.4122
• Shaft seal
  AQ1EGG

Installation dimensions

• Pipe connection on the suction side RPS
  DN 50
• Pipe connection on the pressure side RPD
  DN 32

Information for order placements

• Brand
  Wilo
• Product description
  CronoBloc-BL 32/170.1-0,25/4
• Net weight, approx. m
  50 kg
• Article number
  9139965