Pump and circulator
Standardised centrifugal monobloc electric pumps with coupling, designed for a wide range of applications, such as:
• Central heating
• Water supply
• Air conditioning
• Fire fighting
• Environmental engineering.
Rotation speed: 970 -1450 - 2900 1/min.
from 4 to 3200 m3/h with head up to 158 metres.
Pumped liquid: clean, free of solids and abrasives, non-viscous, nonaggressive, non-crystallised and chemically neutral, with properties similar to water.
Pumped liquid temperature range: from -20°C to +120°C.
Maximum ambient temperature: +40 °C.
Maximum operating pressure:
16 bar as standard up to DN 200, 10 bar for KDN 250 - 300 - 350
Optional PN 16 for KDN 250 - 300 - 350 in the spheroidal cast iron version (H).
Installation: normally in the horizontal position.
Special executions on requests: pumps for liquids other than water.
Special materials and other voltages and/or frequencies.
CONSTRUCTION FEATURES OF THE PUMP
Non self-priming single stage spiral body centrifugal pump with axial suction port, radial delivery port and horizontal axis components, in compliance with ISO 2858/DIN 24256.
KDN pumps have PN 16 nominal sizes and performances.
The suction and delivery flanges are in compliance with EN 7005 PN 10 or 16. All the pumps are dynamically balanced according to ISO 1940 class 6.3; the impellers are hydraulically balanced.
Pump and motor are installed on a single base according to EN 23 661, made of fully welded steel. Oversize pumps have a base with welded steel profiles. Thanks to the particular pump design, the bearings, the impeller, and the seal can be removed without detaching the pump body from the piping (backpull- out design).