Stairs 4" ST series of pumps are manufactured using high quality materials and are designed to deliver years of dependable service. Pumps are on the floating impeller design which reduces starting torque requirements and reduces the effects of sand in the water.
Discharge Head and Motor Adaptor are precision machined cast 304 stainless steel for superior strength and durability. The motor adaptor is NEMA standard.
Bearing is made with Polyacetal for strong wear and abrasive resistance.
Shaft Coupling is made from 304 stainless steel for easy alignment to the motor shaft.
Non-Return valve made from 304 stainless steel, fitted in the discharge to prevent any back flow of water and alleviate any water hammer to the pump.
Impellers are floating type made with Noryl* for a superior sand handling. Together with glass filled polycarbonate diffusers make the super strong pumps formaximum wear and abrasive resistance.
The materials are FDA complaint materials.
Impeller Bowls are made from 304 stainless steel, maximizing wear from abrasion.
Strainer is made from stamped 304 stainless steel for rigidity.
Pump Shaft is made from hex 304 stainless steel bar material for high corrosion resistance.
