SP

The SP pump features submersible, space-saving and easy installation as well as high efficiency and built-in motor protection. SP pumps are renowned for their high reliability throughout the range. Made entirely of corrosion-resistant stainless steel, they are ideal for many applications.

Performance Range

Applications

The SP pumps are suitable for the following applications:
• raw water supply
• irrigation systems
• groundwater lowering
• pressure boosting
• fountain applications
• mining applications
• off-shore applications.

 

Pump Range

Motor Range

 

Feature and Benefit

A wide pump range

We offers energy-efficient submersible pumps ranging from 1 to 280 m³/h. The pump range consists of many pump sizes – and each pump size is available with an optional number of stages to match any duty point.

High pump efficiency

Often pump efficiency is a neglected factor compared to the price. However, the observant user will notice that price variations are without importance to water supply economics compared to the importance of pump and motor efficiencies.

Example

When pumping 200 m³/h at a head of 100 m for a period of 10 years, EURO 60,000 will be saved if a pump/ motor having a 10% higher efficiency is chosen and the price is EURO 0.10 per kWh.

Material and pumped liquids

We offers a complete range of pumps and motors which as standard are made completely of stainless steel to DIN W.-Nr. 1.4301 (AISI 304). This ensures good wear resistance and a reduced risk of corrosion when pumping ordinary cold water with a minor chloride content.

Alternatively, a complete range of zinc anodes for cathodic protection is available, see page 89. For example this may be advisable for sea water applica-tions.

For slightly polluted liquids containing for example oil, we offers a complete range of stainless steel SP NE pumps to DIN W.-Nr. 1.4401 (AISI 316) with all rubber parts made of FKM.

Low installation costs

Stainless steel means low weight facilitating the han-dling of pumps and resulting in low equipment costs and reduced installation and service time.

Bearings with sand channels

All bearings are water-lubricated and have a squared shape enabling sand particles, if any, to leave the pump together with the pumped liquid.

Inlet strainer

The inlet strainer prevents particles over a certain size from entering the pump.

Non-return valve

All pumps are equipped with a reliable non-return valve in the valve casing preventing back flow in connection with pump stoppage.

Furthermore, the short closing time of the non-return valve means that the risk of destructive water hammer is reduced to a minimum.

The valve casing is designed for optimum hydraulic properties to minimize the pressure loss across the valve and thus to contribute to the high efficiency of the pump.

Priming screw

All 4″ pumps are fitted with a priming screw. Consequently, dry running is prevented, because the priming screw will make sure that pump bearings are always lubricated.

Due to the semi-axial impellers of large SP pumps this priming is provided automatically.

However, it applies to all pump types that if the water table is lowered to a level below the pump inlet neither pump nor motor will be protected against dry running.

Stop ring

The stop ring prevents damage to the pump during transport and in case of up-thrust in connection with start-up.

The stop ring, which is designed as a thrust bearing, limits axial movements of the pump shaft.

The stationary part of the stop ring (A) is secured in the upper chamber.

The rotating part (B) is fitted above the split cone (C).

 

 

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