Grundfos SP 17A-25 Deep-Well Submersible Pump 6"

The Grundfos SP 17A-25 is a 6-inch borehole submersible pump delivering 17 m³/h at up to 262 m total dynamic head through 25 stages, positioned at the high-flow end of the SP range for municipal, industrial, and large-scale agricultural groundwater duties in Saudi Arabia. The 6-inch format accommodates the larger motor sizes (4–7.5 kW) needed to achieve this flow and head combination without exceeding the recommended borehole wall velocity for sediment draw — a critical hydraulic constraint in Saudi Arabia's deep gravel-lined boreholes where exceeding 0.3 m/s wall velocity accelerates gravel pack collapse. The SP 17A-25's hydraulic design incorporates Grundfos's radial bearing above each stage, which absorbs the side-thrust from asymmetric inflow in inclined or misaligned boreholes, preventing premature shaft wear that is a common failure mode in sandy aquifer conditions.

The SP 17A series motor is an eight-pole water-cooled hermetically sealed unit rated for continuous S1 duty at temperatures up to 40°C water, with a Class F insulation system providing thermal reserve for operation at water temperatures reaching 35°C commonly found in shallow Saudi aquifers during summer months. The pump and motor stainless steel connection joint uses Grundfos's patented MPS (motor-pump connection sleeve) system, which maintains perfect axial alignment between motor and pump shaft without adjustment tools, eliminating misalignment-induced bearing failure in the field — a significant advantage over competitor units where field joint alignment is technician-skill-dependent. The complete stainless steel outer column and motor housing resist the chloride-driven corrosion that affects carbon steel submersible pumps in Saudi Arabia's saline coastal aquifers.

In Saudi Arabia's water infrastructure landscape, the SP 17A-25 and comparable SP 17A units are specified for SWCC's inland brackish water treatment plant borehole intake fields, where arrays of six to twelve 6-inch submersible pumps feed water to reverse osmosis pre-treatment trains. Saudi Ministry of Environment, Water and Agriculture (MEWA) borehole projects for rural water supply in Hail, Al-Qassim, and Al-Jouf provinces specify the SP 17A range for its combination of high flow, sand resistance, and proven reliability in the arid conditions of the Najd plateau. Major Saudi date palm cultivation operations in Al-Ahsa, Al-Qatif, and Al-Madinah regions rely on SP 17A pump arrays for groundwater extraction at flow rates that can justify the larger 6-inch borehole construction cost, typically extracting from the Umm Er Radhuma limestone aquifer system at depths of 200–400 m.

Razz Middle East supplies the Grundfos SP 17A-25 with full borehole pump set packages including submersible cable, rising main, and Grundfos CU301 or CU354 control units with dry-running protection, motor temperature monitoring, and remote GSM telemetry for unattended agricultural and municipal pumping stations. We provide hydraulic borehole pump selection services and maintain regional field service capability for SP pump installation, commissioning, and retrieval across Saudi Arabia's main agricultural regions.