Quiet running single-stage centrifugal pumps, self-priming, complete with prefilter. Materials: Pump body, pump foot and diffuser in glass loaded polypropilen. Impeller in glass loaded Noryl?. Seal mounting in glass loaded Luranyl?. Motor shaft in stainless steel AISI 420. Mechanical seal in graphite and alumine. Motor housing in aluminium L-2521. Windings impregnated with epoxy resin. Motor: Asynchronous, two poles. IP 55 protection. Class F insulation. Continuous operation. Single phase version built-in thermal protection.