Keterangan :

4SR12 - 4" Multistage Borehole Pump Range

Flow rate up to 300 L/ min ( 18 m³ / hr)
Dynamic head up to 182 m
This new series of submersible pumps is fitted with a patented anti-seize system ( ensuring pump operation, even after being left idle for long periods) , and a water filled motor with removeable cable connector.
OPERATING LIMITS
Maximum fluid temperature + 30° C
Maximum sand content: 150g/ m3
Starts: max. 20/ hr
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" ( 100m) . 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
UNI ISO 228/ 1 gas thread DISCHARGE HEAD in brass ( up to 2.2kW discharge head, check valve and motor bracket in AISI 304 stainless steel) .
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
Brass MOTOR BRACKET built to NEMA dimensional standards.
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 motor with removeable cable connector.
PROTECTION IP 58 for Franklin Electric motor and IP 68 for Pedrollo motor
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) .