Centrifugal Pump Calpeda N 50-125D/A


Centrifugal Pump Calpeda N 50-125D/A single stage end-suction centrifugal pump, with bearing bracket.
Nominal duty points and main dimensions in accordance with EN 733.
Back pull-out construction, for simple and quick dismantling and reassembly.
This pump version with pump casing and lantern bracket in cast iron.

Applications :

  • Clean liquids, without abrasives, which are non-aggressive for the pump materials (contents of solids up to 0.2%)
  • For water supply
  • Heating, air conditioning, cooling and circulation plants
  • Civil and industrial applications and for agriculture
  • Fire fighting applications
  • Irrigation

Operating Conditions :

  • Liquid temperature from -10 deg. C to +90 deg. C
  • Ambient temperature up to 40 deg. C
  • Total suction lift up to 7 m
  • Maximum permissible working pressure up to 10 bar
  • Maximum permissible rotation speed

Pump – Motor Unit
N Series pump connected a standard electric motor in B3 construction from (EN 60072-1), IP 55 protection, three phase 400 V, 50 Hz by means of a baseplate, driven by a flexible coupling and with coupling protection.

Special Features on Request :

  • Special mechanical seal
  • Chrome nickel steel AISI 316 pump-shaft
  • Higher or lower liquid or ambient temperatures
  • Other motor protection
  • Explosion proof construction in accordance with Directice 94/9 EEC (ATEX)
  • Motor for other voltage
  • Frequency 60 Hz

Material (Mechanical seal ) :

  • Pump casing, lantern bracket : Cast iron
  • Impeller : Cast iron, brass
  • Shaft : Chrome steel
  • Mechanical seal : Carbon – Ceramic – NBR

Table Performance :

Model PumpN 50-125D/A
Motor100 L2
Rated motor power output3 kW
Capacity30 m³/h 500 l/min ; Head : 15.5 m
33 m³/h 550 l/min ; Head : 15 m
37,8 m³/h 630 l/min ; Head : 14 m
42 m³/h 700 l/min ; Head : 13.5 m
48 m³/h 800 l/min ; Head : 12 m
54 m³/h 900 l/min ; Head : 10 m
60 m³/h 1000 l/min ; Head : 8 m
66 m³/h 1100 l/min ; Head : 6 m

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