Pump End Specification
The Selwood S200 Electric pump is designed for efficient solids handling with a capacity of 635 m³/h (2794 gpm) and a total head of 29 m (95 ft). It can handle solids up to 100 mm (4 in) and features a self-priming lift of 8.8 m (28 ft). The pump operates with a power requirement of 45 - 75 kW (60 - 100 hp) and a maximum speed of 1800 rpm. The impeller is a vortex type with 8 blades and a diameter of 235 mm (9.25 in).

Priming Method
The pump uses the Selprime® system, a self-priming method utilizing a water-tolerant diaphragm air pump, which is environmentally friendly and avoids issues related to oil vapour emissions.

Materials
The pump casing is made of Grey Iron BSEN 1561 Grade EN-GJL-200, while the impeller is made of Cast Iron BSEN 1563 Grade EN-GJS-450-10. The shaft is constructed from Steel BS EN 10277 Grade C40+C.

Optional Extras
The pump can be configured with various optional extras including skid or super silent builds, genuine parts, valves, fittings, and control panels. It also supports additional accessories like tanks, filtration systems, and telemetry.

Performance Graphs
The document includes performance graphs illustrating the relationship between capacity, head, and power rating at different speeds (1800 rpm, 1600 rpm, 1450 rpm).

Sound and Emission
The sound power level is 106 LWA with sound pressure levels of 83 db(A) at 1m and 74 db(A) at 7m for the standard build. The super silent build has reduced sound levels of 92 LWA, 69 db(A) at 1m, and 60 db(A) at 7m.

Applications
The S200 Electric pump is suitable for handling raw and screened sewage, sludge, slurry, and water containing fine and large solids, as well as rags and fibres.