Calpeda A50-125BA Close coupled centrifugal pump with open impeller. The built-in backflow preventer avoids reverse siphoning when the pump is stopped and assures automatic re-priming at the next start. The pump re-primes itself even if partially filled with liquids and with completely empty suction pipe.
This pump version with pump casing and lantern bracket in cast iron.
Self-priming centrifugal pump Calpeda A50-125BA can use for :
- Clean or slightly dirty water, also with solids up to 10 mm grain size for A 40, A 50 and 15 mm for A 65, A 80
- Draining a basin or a sump
- Irrigation
- Civil and industrial application
Operating Conditions :
- Liquid temperature from -10 deg. C to +90 deg. C
- Room temperature up to 40 deg. C
- Maximum permissible working pressure up to 6 bar (10 bar for A 80-170)
- Continuous duty
Motor :
- 2 pole induction motor, 50 Hz (n = 2900 rpm)
- Three phase :
230/ 400 V +/- 10% up to 3 kW
400/ 690 V +/- 10% from 4 to 7,5 kW - Insulation class F
- Protection IP 54
- IE3 efficiency class for three phase motors (IE2 up to 0.65 kW)
- Constructed in accordance with :
EN 60034-1; EN 60034-30-1.
Materials :
| Pump casing Suction flange Inspection cover Lantern bracket Impeller | Cast iron |
| Shaft | Chrome-nickel steel (AISI 303) Chrome steel (AISI 430) |
| Mechanical seal | Carbon – Ceramic – NBR |
Special features on request :
- Other voltages
- Frequency 60 Hz
- Protection IP 55
- Special mechanical seal
- Higher or lower liquid or ambient temperatures
- Construction with bearing bracket
Specification :
| Model | A 50-125B/A |
| Voltages | 230 V 4,7 A 400 V 2,7 A |
| Maximum power input (P1) | 1.6 kW |
| Rated motor power output (P2) | 1.1 kW 1.5 HP |
| Capacity | 6 m³/h 100 l/min ; Head 15,5 m 9 m³/h 150 l/min ; Head 14,9 m 12 m³/h 200 l/min ; Head 14,2 m 15 m³/h 250 l/min ; Head 12,9 m 18 m³/h 300 l/min ; Head 11,6 m 21 m³/h 350 l/min ; Head 10 m 24 m³/h 400 l/min ; Head 8,3 m 27 m³/h 450 l/min ; Head 6,2 m 30 m³/h 500 l/min ; Head 4 m |
| Input | 2 Inch |
| Output | 2 Inch |