4SR - 4" Multistage Borehole Pump Range General Product Description

Further Product Info 4SR Pump Performance Curve 4SR Pump Performance Data 4SR Pump Dimensions

PERFORMANCE RANGE

Flow rate up to 375 L/min (22.5 m³/hr)
Dynamic head up to 525 m

The special design of these pumps allows them to handle a sand content of up to 150g/m³ without risk of blockage or premature wear.

OPERATING LIMITS

Maximum fluid temperature + 30°C
Maximum sand content: 150g/m³
Starts: max. 20/hr at regular intervals

PEDROLLO borehole pumps feature a patented design giving them a high tolerance of entrained sand.

PUMP INSTALLATION AND APPLICATIONS

These pumps are suitable for pumping water with a sand content of up to 150g/m³. Their high performance and dependability make them suitable for use in domestic, civil and industrial fields, for the automatic distribution of water, for irrigation, washing and pressure-boosting systems, and for fire-fighting purposes etc.

4SR pumps can be installed in wells with a diameter of no less than 4" (100mm). The pump is lowered into the well by means of the delivery pipe until it is completely immersed. (min 50cm) and at least one metre from the bottom of the well. Care should be taken to ensure that the pump remains submerged as pump operation may cause the level of the water in the well to fall. The pump can be installed either vertically or horizontally. When installed vertically it is advisable to secure the pump by using a stainless steel or nylon cable connected to the special holes provided on the discharge head.

PERFORMANCE

4SR pumps combine the advantages of a submersible pump with the performance of a centrifugal pump.
As submersible pumps, they assure reliable operation even with considerable water depth.
As multistage pumps they assure high flows, high heads, stable performance curves.

Curve tolerance according to ISO 2548

STRUCTURAL CHARACTERISTICS

• Techno-polymer, high resistance CHECK VALVE enables the weight of the column of water to be dispersed without stress to the impellers and diffusers, thus ensuring long pump life.
• Lexan General Electric technopolymer IMPELLERS.
• Noryl GFN2 technopolymer DIFFUSERS
• AISI 304 stainless steel BOWL.
• AISI 304 stainless steel EXTERNAL SLEEVE.
• AISI 304 stainless steel PUMP SHAFT
• AISI 304 stainless steel DELIVERY BODY & MOTOR BRACKET.
• AISI 316L sintered stainless steel TRANSMISSION COUPLING
• AISI 304 stainless steel BOLTS
• AISI 304 stainless steel FILTER
• AISI 304 stainless steel CABLE GUARD
• 4" SUBMERSIBLE MOTORS: water filled Franklin or Tesla motor.
• PROTECTION IP 68
• FE4DM/T submersible SUPPLY CABLE. Supplied standard with 1.5m of cable.
• CONSTRUCTION AND SAFETY STANDARDS in compliance with EN 60 335 -1, (IEC 335-1, CEI 61-150) EN 60034-1 (IEC 34-1, CEI 2-3).

PERFORMANCE CURVE

PERFORMANCE DATA

PRODUCT DIMENSIONS

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