CALPEDA
NR Inline Centrifugal Pumps.
Applications
- For clean
liquids without abrasives, which are non-aggressive for the pump materials
(solids content up to 0,2%).
- For water
supply.
- For heating,
air-conditioning, cooling and circulation plants.
- For civil
and industrial applications.
- When low noise
operation is required (n=1450 1/min).
Construction
- Close coupled,
single impeller, centrifugal pumps; electric motor with extended shaft directly
connected to the pump.
- Pump casing
with suction and delivery connections with the same diameter and on the
same axis (in-line).
- Connections:
PN10 flanges UNI 2236, UNI 2237.
- Counter
flanges (on request) NR50, NR65: Screwed flanes UNI 2247, PN16.
- Counter
flanges (on request) NR80, NR100, NR125: Flanges for welding UNI 2277,
UNI 2278, PN10
Operating Conditions
- Liquid temperature
up to 100°C.
- Room temperature
up to 40°C.
- Total suction
lift up to 7m.
- Maximum permissible
working pressure up to 10 bar.
- Continuous
duty.
Materials
| Components |
Material
|
| Pump
casing Lantern Bracket |
Cast
iron
200
ISO 185
|
| Impeller |
Cast
iron
200
ISO 185
(Brass P-Cu
Zn 40 Pb2 UNI 5705 for NR50)
|
| Shaft |
Chrome-nickel
steel AISI 303 for pumps up to 1.1kW Chrome steel AISI 430 for pumps
from 1.5kW to 4kW
|
| Mechanical
seal |
Carbon-Ceramic
|
| Counter-flanges |
Steel
Fe 42 UNI 7070
|
Motor
- 4 Pole induction
motor, 50Hz (n=1450 1/min)
- NR
: 3ph 230/400V ± 10%
- NRM
: 1ph 230V ± 10%
- 2 Pole induction
motor, 50Hz (n=2900 1/min)
- NR
.../2 : 3ph 230/400V ± 10%
- NRM
.../2 : 1ph 230V ± 10%
- 400/690V ±
10% from 4 to 75kW.
- Insulation
class F
- Protection
IP44
- constructed
in accordance with IEC 34
Special Features
On Request
- Other voltages.
- Frequency
60Hz.
- Protection
IP55.
- Special mechanical
seal.
- Higher liquid
or ambient temperatures.
Please click here for a technical data sheet
(114kb)
