Multistage centrifugal pump with vertical axis
Vertical multistage centrifugal pump suitable for medium to large user water systems. Recommended for pressurisation units, boiler supply, hot water and cooling water circulation, fire fighting and washing systems, drinking water supply and filling of pressure vessels, sprinkler and watering systems and water purification systems.
from 4 to 118 m3/h with head up to 231 metres.
Pumped liquid: clean, free of solids and abrasives, non-viscous, non crystallised and chemically neutral, with properties similar to water.
Pumped liquid temperature range: from -15 °C to +80 °C.
Maximum ambient temperature: +40 °C.
Maximum operating pressure:
25 bar (2500kPa) NKV 10-15-20-65-95
32 bar (3200kPa) NKV 32-45
Installation: fixed, vertical position.
Special executions on request:
60 Hz version.
Version entirely in stainless steel.
CONSTRUCTION FEATURES OF THE PUMP
All the parts in contact with the liquid are rust-proof. Microcast AISI 304 stainless steel internal pump body, ULTEM diffusers, AISI 431 pump shaft, microcast steel impellers, AISI 304 liner. Cast iron external pump body treated with cataphoresis paint coating, cast iron support. Maintenance-free “cartridge” silicon/silicon mechanical seal, removable without removing the motor starting from 5,5 kW. Rigid motor-pump coupling.
AISI 304 stainless steel impellers, diffusers and liner, to ensure durability and high performance. AISI 431 stainless steel pump shaft. Cast iron pump body and seal disc, treated with cataphoresis paint coating. Carbon stage body bushing, to ensure durability in case of dry operation. Oversized ball
bearings, fitted on the motor support to ensure duration and eliminate axial adjustments. PTFE floating adjustment ring, WRAS approved, for constant performance. Silicon carbide/graphite mechanical seal, removable without removing the motor starting from 5,5 kW. Rigid motor-pump coupling. Special version fully made of stainless steel available on request.