Chemical Pumps With mechanical seal Non-Metallic Close-Coupled Chemical Pump Type NP-B In PP / PE-UHMW / PVDF Casing dimensions to EN 22858 / ISO 2858 Applications Type NP-B chemical pumps are the solution of choice whenever it comes to pumping acids, alkalis or chemically contaminated fluids in the presence or absence of solids. Typical applications include the chemical and metal finishing industries, steel and stainless steel pickling lines, evaporation and regeneration units, flue gas scrubbing downstream of waste incinerators as well as exhaust air cleaning and scrubber effluent treatment. Design Horizontal, end-suction, single-stage, centrifugal pump with volute casing and radial impeller. Casing and fitting dimensions to EN 22858/ ISO 2858, complemented by Size 40-25-125 and 40-25-160 pumps. Materials Part designation Standard material range : PP Pump casing PP PE-UHMW PVDF Internediate lantern : GG 20 Suction flange : GG 20 Pressure flange : 10.037 Casing cover : PP1) PE-UHMW1) PVDF1) Pump shaft : 9SMnPb28 Impeller PP1) PE-UHMW1) PVDF1) Secondary seals : EPDM, FPM, FFKM Seal cover : PP Stationary seal ring : SSiC Rotating seal ring : SSiC Shaft sleeve : 1.4571/ Fluoroplastics 1) Material combinations possible PP Polypropylene PE-UHMW Ultrahigh-molecular polyethylene PVDF Polyvinylidene fluoride SSiC High-purity silicon carbide FPM Fluoroelastomer EPDM Ethylene propylene diene elastomer FFKM Perfluoro elastomer Performance data for 50/ 60 Hz operation2) Pump capacity [ Q] up to 110 m3/ h Total differential head [ H] up to 70 m Motor sizes up to IEC motor size 132 Shaft sealing Single mechanical seal Flange connection dimensions Standard: - to DIN 2501, PN 16, Options: - to ANSI B16.5, Class 150, - to JIS B2210, Class 10K. Drive Three-phase a.c. motor, design B35 to IEC, type of enclosure IP55; motor voltage according to customer’ s specification