centrifugal pump power calculation example

Hydromatic W/D/V-A1 Submersible Sump Pump Sell Sheet

W/D/V-A1

Automatic operation features wide-angle float switch (W-A1), or Hydromatic’s exclusive pressure diaphragm switch (D-A1) or Hydromatic’s vertical, mechanical float switch (V-A1). All switches feature a piggyback plug-in arrangement that allows for simple conversion to manual operation. Cast iron body and an oil-filled motor provide superior cooling characteristics for longer pump life. Motor windings contain automatic thermal overload protection. Energy efficient .3 HP motor pumps up to 38 GPM at 10’ total dynamic head. Discharge is 1-1/2” N.P.T. May be operated manually or automatically with a piggyback switch.

Performance data

.3 HP

Pump characteristics

Materials of construction

Handle Stainless Steel Lubricating Oil Dielectric Oil Motor Housing Cast Iron Shaft Steel Mechanical Shaft Seal Seal Faces: Carbon/Ceramic Seal Body: Anodized Steel Spring: Stainless Steel Bellows: Buna-N Impeller Thermoplastic Upper Bearing Cast Iron Sleeve Lower Bearing Ball Bearing Strainer/Base Plastic Fasteners Stainless Steel

Dimensional data

On/Off level adjustable. Pump/Motor Unit Submersible Automatic Models W-A1, D-A1 & V-A1 Horsepower .3 Full Load Amps 8.0 Motor Type Shaded Pole (4 pole) R.P.M. 1550 Phase Ø 1Voltage 115 Hertz 60 Temperature 120°F Ambient NEMA Design A Insulation Class B Discharge Size 1-1/2” NPT (38mm) Solids Handling 1/2” (13mm) Unit Weight 23 lbs. Power Cord 18/3, SJTW, 10’ std. (20’ optional)