Bredel - Duconite Peristalltic Hose Pump Brochure

DuCoNite® Chemical Duty ProtectionDeveloped and tested by Watson-Marlow Bredel in conjunction with expert metallurgists, DuCoNite® is a three step metallic surface treatment process with proven excellent chemical resistance to a myriad of chemicals, including many of the common aggressive ?uids pumped by hose pumps around the globe:Chemical Concentration Fluid Temp ResistanceSodium Hypochlorite up to 18% 70-122 F ASodium Bisul?te 38% 70-122 F AFerric Chloride up to 50% 70-122 F AFerrous Chloride 35% 70-122 F AAlum 50% 70-122 F AHydro?uosilicic Acid 18-24% 70-122 F BSodium Hydroxide 20-50% 70-122 F APotassium Permanganate 50% 70-122 F AAqueous Ammonia 20% 70-122 F BSulfuric Acid 93-97% 70-122 F ACitric Acid 50% 70-122 F AZincorthophosphate 25% 70-122 F APhosphoric Acid 50% 70-122 F ANitric Acid 25% 70-122 F AFor additional chemical compatibility information, contact Watson-Marlow Bredel.SPX DuCoNite® - An Engineered Solution In the past, hose pump corrosion protection was achieved by applying a thick coating of epoxy or ?uoropolymer (Halar) to inside of the pump. To effectively protect the pump against chemical attack, coating manufacturers recommend a thick application layer, which causes two problems; Pump components now require special machining to maintain proper critical tolerances, adding cost to an already expensive solution. Some manufacturers try to avoid this ma-chining step by applying the coating thinner than recommended, creating in-ferior corrosion protection. Further, thick coatings inside a hose pump are prone to cracking and chipping which is not ideal when handling aggressive chemicals With the all-new SPX DuCoNite® pump, Watson-Marlow Bredel offers an engineered chemical duty protection system that exceeds the per-formance of a basic coating:• Chemical Duty DuCoNite® metallic surface treatment of the cast iron pump housing, cover, rotor and bearing housing• Clear PVC sight window, PVC drain plug and vent port with no metallic threads• All titanium internal hardware • Epoxy pressing shoes with titanium bolt threads and shims (SPX25 and SPX32)• Viton bearing hosing seal• EPDM cover, port, and window seals• 316SS external hardware, ?anges, brackets, hose clamps and support frame • Wetted ?ange inserts of 316 Stainless Steel, Polypropylene or PVC• Optional hose leak/high lubricant level sensor• The SPX DuCoNite® Pump is a standard Watson-Marlow Bredel product with spare parts readily availableWatson-Marlow Bredel Pumps37 UPTON TECHNOLOGY PARK, WILMINGTON, MA 01887-1018TEL: 800-282-8823, 978-658-6168 / FAX: 978-658-0041http://www.watson-marlow.comENGINEERED SIMPLICITYThe pumping action results from alternately compressing and relax-ing a machined hose pump element between the pump housing and the compressing shoes. The ?uid ahead of the shoe is pushed towards the discharge, while the rebounding pump element behind the shoe draws more ?uid in. Due to 100% compression at all times, the pump does not slip, providing very high metering accuracy and pressure performance. The absence of pump seals, seats or valves, means that abrasive slurries are no problem. Because the liquid only makes con-tact with the inner wall of the hose pump element, the pump is perfect for aggressive products.THE PERFECT PUMP FOR:• Corrosives• Abrasives• Shear sensitive liquids• High viscosity liquids• High density liquids• Large solids• Metering (±1% accuracy)FEATURES:• Self priming• Dry running• Reversible• No metal to metal product contact• Liquid contained within the hosepump element• Easy maintenance, low cost, short down time