They are single-stage pump with complete drainage device, got 3C,CE,ISO,GS,ROHS certificates and so on.

Applications:Compact hydromassage units 

Materials:Suction and discharge mountings and motor mountings in polypropilen.Motor shaft in stainless steel AISI-420.Impeller in polypropilen.Mechanical seal in graphite and steatite.Motor housing in aluminium L-2521.Windings impregnated with epoxy resin. 

Motor:Asynchronous, two poles.IP 55 protection.Class F insulation.Continuous operation.Built-in thermal protection

BTP-A/B quiet-running centrifugal bathtub pump ;3C,CE,ISO,GS,ROHS certificates