TECHNICAL DESCRIPTION STN-SP are self-priming magnetic driven centrifugal pumps in close-coupled execution. Ideal for safe installation priming from the top of vessels and/or tanks for transferring acids, solvents and corrosive liquids. The pump has to be completely filled prior to priming; after the first priming, pump design grants that enough liquid remains in the casing for subsequent primings. exclusive design does not require any Clapet or non-return valve, that may be subject to wear and deteriorate pump performances. All non metallic wet-end components are injection moulded and/or machined from block material. The LF Graphite bush configuration, with its low friction coefficient, combined with CDR FTC exclusive balancing system of the internal magnet (Full Thrust Control), allows to withstand occasional dry running periods up to one hour. On the other hand, the SiC version allows the use of this pumps with particularly aggressive and abrasive liquids. The magnetic coupling with neodymium-iron-boron magnets insures a sealless, zero-leakage pumping solution. The closed-coupled execution makes the pump very compact, silent and safe.
FEATURES AND APPLICATIONS FEATURES AND APPLICATIONS DESCRIPTION Pump type Materials Handled liquids Self-priming magnetic driven centrifugal pumps in close-coupled execution PP Acids, solvents and corrosive liquids Hydraulic performances Q max = 15 m3/h H = 23m Drives From 0,75 kw (size 80) to 4 kw (size 112) Temperature range System pressure ratings Viscosity Solids From 0 C to +50 C From 20 C = 9bar to 50 C = 7bar 2% max concentration in weight Hardness max. 800 Vk Size max. 150µm DRY RUNNING PROTECTION FEATURES "FTC" (Full Thrust Control) CDR System Features Description Shaft/Axial thrust shoe material Bushing material Materials Working time with unprimed pump Working time with dry pump Sintered SiC Graphite LF PP 1h 2h Note: Liquid used for testing: water. Bushing wear after test: insignificant dimensional change
MAX TEMPERATURES AND PRESSURE
PARTS INTERCHANGEABILITY TABLE Pump Size Motor Front Casing Pump Casing Injector Suction casing Flange size 101 102 103 106 106.1 30 80 9490/01/1M38 9490/02/1M38 9492/10/1M38 9492/14/0M43 9492/12/0M38 30 90 9490/01/1M38 9490/02/1M38 9492/10/1M38 9492/14/0M43 9492/12/0M38 30 100/112 9490/01/1M38 9490/02/1M38 9492/10/1M38 9492/14/0M43 9492/12/0M38 40 80 9490/01/1M38 9490/02/1M38 9492/10/1M38 9492/14/0M43 9492/12/0M38 40 90 9490/01/1M38 9490/02/1M38 9492/10/1M38 9492/14/0M43 9492/12/0M38 40 100/112 9490/01/1M38 9490/02/1M38 9492/10/1M38 9492/14/0M43 9492/12/0M38 Pump Size Motor Flange support Suction Casing Adapter Base-plate Impeller (134 mm) Gasket size 106.2 107 181 230 412.3 30 80 9492/11/0M38 9492/03/0M44 9490/05/0M38 9424/C3/0M38 130/4175M 30 90 9492/11/0M38 9492/03/0M44 9490/05/0M38 9424/C3/0M38 130/4175M 30 100/112 9492/11/0M38 9492/03/0M44 9490/05/0M38 9424/C3/0M38 130/4175M 40 80 9492/13/0M38-9490/05/0M38 9426/C3/0M38 130/4175M 40 90 9492/13/0M38-9490/05/0M38 9426/C3/0M38 130/4175M 40 100/112 9492/13/0M38-9490/05/0M38 9426/C3/0M38 130/4175M Pump Size Motor Gasket Gasket Gasket Lantern adapter Plug size 412.4 412.5 412.6 500 912 30 80 130/4175M 130/6745M 130/61150M 9490/03/1M06 9492/05/0M38 30 90 130/4175M 130/6745M 130/61150M 9490/03/1M06 9492/05/0M38 30 100/112 130/4175M 130/6745M 130/61150M 9490/03/1M06 9492/05/0M38 40 80 130/4175M 130/6745M 130/61150M 9490/03/1M06 9492/05/0M38 40 90 130/4175M 130/6745M 130/61150M 9490/03/1M06 9492/05/0M38 40 100/112 130/4175M 130/6745M 130/61150M 9490/03/1M06 9492/05/0M38 Note: for components not listed refer to interchangeability STN table
OVERALL DIMENSIONS Note: select motor size 80/90 frame B5 and motor size 100/112 frame B14. Pump weight = 30kg
SECTION DRAWING PART LIST 912 412.4 filling plug tappo riempimento A-A A 106.1 106.2 412.3 103 960 412.5 412.6 101 500 914 102 106 107 230 901.1 550.2 drain plug tappo scarico 35 901 550.1 181 37 550 A DIN Code Q.ty Description Material 35 15 Pump Casing Rod AISI 304 37 29 Nut AISI 304 101 1 Front Casing PP 102 1 Pump Casing PP 103 1 Injector PP 106 1 Suction Casing ECTFE 106.1 1 Flange PP 106.2 2 Flange Support PP 107 1 Suction Casing Adapter ( 30 only) PTFE 181 1 Base-plate PP 230 1 Impeller PP 412.3 2 Gasket FPM / EPDM 412.4 3 Gasket FPM / EPDM 412.5 1 Gasket FPM / EPDM 412.6 1 Gasket FPM / EPDM 500 1 Lantern Adapter AISI 304 550 29 Elastic Washer AISI 304 550.1 2 Washer AISI 304 550.2 4 Washer AISI 304 901 2 Screw AISI 304 901.1 4 Screw AISI 304 912 3 Plug PP 914 6 Screw AISI 304 960 29 Washer AISI 304
PERFORMANCE CURVES: 30
PERFORMANCE CURVES: 40