سلطان وخلف

N, N4 End-Suction Centrifugal Pumps standerdized EN733 

Construction:

Single-stage end-suction pumps, 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.
Rated speed of rotation (50Hz): N   = 2900 1/min.
                                            N4 = 1450 1/min
Connections: PN 10 flanges EN 1092-2. 
Counter-flanges (on request)

 Shaft sealing

• Standardized mechanical seal in accordance with ISO 3069.
• Stuffing box seal (on request)

Applications
For clean liquids, without abrasives, which are non-aggressive for the pump materials (contents of solids up to 0.2%)
For water supply. 
For heating, air conditioning ,Cooling and circulation plants.
For civil and industrial applications and for agriculture.
For fire fighting applications.
For irrigation.

Operating conditions
Temperature of liquid: from -10 °C to +90 °C.
Operating environment temperature: up to 40 °C.
Total suction lift up to 7 m.
Maximum permissible working pressure up to 10 bar.

Motor
N,N4 pump connected to a standard electric motor in B3 construction form (IEC 72), classification scheme EFF2 or EFF1 (High efficiency) on request, IP 55 protection,
three-phase 400 V, 50 Hz by means of a base plate, driven by a flexible coupling and with coupling protection.

Special features on request
- Special mechanical seal.
- Chrome-nickle steel AISI 316 pump-shaft.
- Higher or lower liquid or ambient temperatures.
- Other motor protection.
- Explosion proof construction in accordance with Directive 94/9 EEC (ATEX).
- Motor for other voltage.
- Frequency 60 Hz (as per 60 Hz data sheet)