Application

OPA multistage, vertical pumps are designed to pump and increase the pressure or treated, dringking water that do not contain abrasive and long-fibred additions. Maximum water contamination with sand - up to 100 g/me3. OPA pumps can also be used to pump other liquid within corrosion resistance of materials applied in pump construction. Tanks to a standard flange-type motor type motor used in this pump, it is easily availabe and replaceable in case of breakdown.

Material versions:

• lower and upper casing: grey cast iron or bronze
• middle casing: noryl, grey cast iron, bronze
• impellers: polycarbonate, brass, noryl
• stator: noryl, grey cast iron, bronze
• shaft: stainless steel
• jacket: stainless steel

Deep-well motors offered by Hydro-Vacuum S.A are electric, rewindable, submersible, wet-type motor closed in stainless steel housing.

Deep-well motors are characterized by:

• wet-type, rewindable motors are available even from 1,5 kW
• stator winding is made of wires with thermoplastic PVC insulation, which increases motol life 8 times comparing to winding insulated with PP
• motor shaft is fixed with radial, slide bearings and one axial bearing. this is a modern segmented structure, so called: hard bearing, where frictional couple is made of carbon-graphite and steel
• stable and firm connection of the motor housing and casing that prevents it from breaking of in the well
• impeller shaft is friction welded to the impeller tip and then machined, which prevents the impeller tip from breaking off
• possibility to use temperature sensor
• according to international standards, connection acc. to NEMA standard
• possibility to make the stator winding of wires that are resistant to higher temperature