SJS submersible pump – Thetys Pumps

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SJS submersible pump

Thetys Pumps / Products / Pumps / Vertical pumps / Vertical wet pit pumps / SJS submersible pump

SJS submersible pump

Power up: submersible motor pumps

The SJS submersible pumps utilize a submersible motor to drive the Sulzer vertical pump stages. The normal vertical turbine lineshaft and bearings are thus eliminated and power levels to 2 MW (2,700 hp).

Main benefits

No lineshaft: lineshaft couplings or lineshaft bearings to maintain
No external cable splices: Power cable connections only in motor and terminal box
Low, medium and high voltage submersible motors available to 2 MW (2,700 hp)
Water/glycol filled environmentally friendly motor for improved efficiency
Variety of materials available from cast iron to super duplex stainless steellity

Main applications

Offshore Seawater Lift
Offshore Diesel Genset Firewater
Offshore Ballast Water
Onshore Municipal Pressure Boosting
Onshore Mine Dewatering

Main design features

Standard design with submersible motor below the bowl assembly for low cost
Inverted design with motor above bowl assembly for low NPSHr and low submergence
Bidirectional thrust bearing in submersible motor
Positive pressure in submersible motor for contamination prevention

Key characteristics

Capacities	Up to 10,000 m3/h / 44,000 US gpm
Heads	Up to 230m / 750 ft
Pressures	Up to 40 bar / 600 psi
Temperatures	Up to 80°C / 180°F
Discharge sizes	Up to 915mm / 36 inches
Maximum speed of rotation	Up to 3,600 rpm for smaller sizes