CronoBloc-BL is a glanded pump in block design with flange connection designed for pumping large quantities of hot and cold water, including high-rise building applications.

Its low life cycle cost is the result of optimised hydraulic efficiencies combined with corrosion-resistant cataphoretic coatings, which ensure an economical and long service life.

Over 200 product variants in the series cater for a wide range of applications.

Applications

For pumping cold and hot water (in accordance with VDI 2035) without abrasive substances in heating, cold water and cooling water systems.

Key features

  • Reduced life cycle costs due to optimised efficiency.
  • High corrosion protection due to cataphoretic coating of the cast iron components.
  • Standard condensate drainage holes in the motor housings.
  • High-efficiency motors as standard; from 0.75 kW nominal motor power: motors with IE2 technology.
  • Meets user requirements due to performance and main dimensions in accordance with EN 733 (DIN for norm pumps).
  • Easy to install due to standard pump support feet and optional supporting blocks.

Technical data

  • Minimum Efficiency Index (MEI) ≥ 0.4
  • Permissible temperature range of -20 °C to +140 °C
  • Mains connection 3~400 V, 50 Hz (others on request)
  • Protection class IP55
  • Nominal diameter DN 32 to DN 150
  • Max. operating pressure 16 bar (optionally 25 bar on request)

Product description

Single-stage low-pressure centrifugal pump in block design, with an axial suction port and a radially arranged pressure port, along with:

  • Mechanical seal
  • Flange connection with pressure measuring connection R 1/8
  • Lantern
  • Coupling
  • IEC standard motor

Materials, as standard

  • Pump housing and lantern: Standard: EN-GJL-250
  • Impeller: Standard: EN-GJL-200
  • Shaft: 1.4122
  • Mechanical seal: AQEGG

Options

  • ...-L1 variant with bronze impeller (at additional charge)
  • …-L4 variant with stainless steel impeller (at additional charge)
  • ...-H1 variant with housing made of spheroidal cast iron (at additional charge)
  • Other voltages and frequencies as well as ATEX approval on request
  • Other mechanical seals on request

Accessories

  • Bases (pump housing and motor) for installation on a base
  • PTC thermistor sensor, PTC thermistor tripping relay
  • Special motors
  • Special mechanical seals
  • SC-HVAC, CC-HVAC control systems and switchgears