TM 5-3895-374-24-2applicationsSIHI’s ZTN self-cooling centrifugal pumps may be usedin installations with positive or negative suction pressuresfor a wide variety of applications:• The Chemical Industryheating of agitators, reactors,drying plants, polymerization plants, plants forconveying highly viscous products and producingplastic material and synthetic fibers.• The Rubber & Plastic Industryheating of calenders,melting pots, automatic injection molding machinesand power presses.• The Food Industryheating of baking and fish-fryingovens, rendering plants, distillation of fatty acids andglycerine and production of milk powder and potatochips.• The Paper Industry & Laundriescalender rolls,production of corrugated cardboard, heating of laundrymachines and industrial ironers.designUtilizing the latest heat transfer pump technology. SIHIZTN pumps are specially designed to provide:• Uncooled Shaft Sealing• Shaft Sealing Virtually Free From Leakage• High Efficiency• Low Operating Temperatures at Shaft Seal and BallBearing Areas• Minimal Product Heat Loss• Avoidance of Thermal Stress• Reliable Bearings, Low VibrationThe back pull-out design permits the removal of thebearing housing and complete rotating element towardthe driven end without removing the pump casing fromthe suction and discharge piping. With a spacer couplinginstalled, the complete bearing housing and rotatingelement are removable without disturbing the motor.Only two shaft assemblies are required for the entire 24model range. Within each shaft assembly, shafts, radialshaft sealing rings, impeller nuts, sleeve bearings, ballbearings, bearing covers and miscellaneous hardwareitems are interchangeable. Pumps are designed tocompensate for thermal expansion by distinctlyseparating the sealing element and the bearing housing.Since the sealing unit can freely expand in axial directionwithout affecting the axial position of the shaft in thebearing housing, a standard coupling is utilized.(page 3 - 1135)
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