Submersible pumps have a sturdy and robust design that ensure an improved and consistent performance, improved life of the pump, energy efficiency and power savings, and spare parts which are easily interchangeable.Totally enclosed and sealed electric motor, prefilled with a mixture of propylene glycol & filtered water, The product shown may differ from actual supply in view of continuous change in design and specifications, A non-return valve (NRV must be fitted nearest to the pump to avoid damage due to water hammer.