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Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250

Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250
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Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250 - 1

Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250 PUMPTECHNOLOGY ZEN P I / 41 133.65601.58.01 E 01/2005 TECHNICAL DATA Output: max. 600 m³/h Delivery head: max. 90 m Speed: max. 3600 rpm Temperature: max. 230 °C Casing pressure: PN 40 Shaft sealing: balanced standard mechanical seal uncooled Flange connections: material design 1B DIN EN 1092-2 PN 40 2B DIN EN 1092-1 PN 40 Direction of rotation: clockwise, when looking at the pump from the drive end APPLICATION The volute pumps of the series ZEND are part of the overall programme heat transfer and circulation pumps. They are primarily used for circulation of hot water in closed pipe and vessel systems. Therefore their fields of applications are the energy production heat transport and the industry and here mainly in systems where hot water as heat carrier is given preference, despite its high systems pressure, over oil as heat carrier. DESIGN Horizontal, single-stage volute pumps with dimensions and nominal ratings to DIN EN 22858 in back pull out design, with uncooled balanced mechanical seal. The series ZEND has especially been designed for the trouble free handling of hot water up to 230 °C and is distinguished by: • A double heat barrier that causes an optimal energy consumption by the pump and reduces the temperature level in the mechanical seal chamber to less than 100 °C without external cooling circuit (see temperature curve on page 3). The service life of the mechanical seal increases considerably. • A special design that automatically leads accumulation of gas to exhaust. Consequently the dry operation of the mechanical seal can be excluded. • A programme that comprehends 29 construction sizes and thus guarantees an optimal solution for every operating point. • The back pull out design, which permits the removal of the complete bearing unit towards the drive end without removing the pump casing from the pipe work. If a spacer coupling is installed it is also unnecessary to disconnect the motor. CONSTRUCTION Casing pressure max. 40 bar from 0 °C to 120 °C max. 35 bar from 120 °C to 200 °C max. 32 bar from 200 °C to 230 °C Intermediate values con be obtained by interpolation. Please note: Technical rules and safety regulations. max. casing pressure = inlet pressure + zero head max. test pressure = 52 bar Flanges location: Axial suction flange, discharge flange radially upwards. Flanges: The flanges comply with DIN EN 1092 part 1 and part 2 resp. PN 40. Flange design to ANSI 300 is possible. Hydraulic: Designation of this construction type: A. Bearing: One grease-lubricated, reinforced antifriction bearing to DIN 625 and one internal liquid flushed sleeve bearing. Designation of this construction type: S Direction of rotation: Clockwise, when looking at the pump from the drive end. Shaft sealing: Code BG3: balanced standard mechanical seal seal face materials SIC/carbon elastomer EPDM

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Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250 - 2

2 Material design: Material Execution Item Components EN US denomination material number EN material denomination DIN material number DIN material denomination ASTM Standard AISI 1B 2B 10.20 15.20 volute casing* intermediate flange EN-JS 1025 EN-GJS-400-18-LT 0.7043 GGG-40.3 A 395 X 16.10 33.00 casing cover bearing bracket 1.0619 GP 240 GH 1.0619 GS-C 25 A 216 Gr WCB X 10.91 17.11 intermediate piece** 23.00 impeller** 1.4571 X6 Cr Ni Mo Ti 17 12 2 1.4571 X6 Cr Ni Mo Ti 17 12 2 A 276 Gr316Ti 316 Ti X 52.30 shaft sleeve 1.4571 X6 Cr Ni Mo Ti 17 12 2 1.4571 X6 Cr Ni Mo Ti 17 12 2 A 276 Gr316Ti...

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Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250 - 3

3 Sectional drawing and nomenclature ZEND 031125 ... 031250 AS BG3... ZEND 032160 ... 125250 AS BG3... 10.20 volute casing 10.91, 17.11 intermediate piece 15.20 intermediate flange 16.10 casing cover 21.00 shaft 23.00 impeller 33.00 bearing bracket 43.30 mechanical seal 44.10 casing for mechanical seal 52.30 shaft sleeve 52.90, 54.00 sleeve bearing Heat barrier / shaft seal / bearing / feet arrangement Heat transfer installations have achieved a high level of technical development. Consequently the requirements on the pumps handling heat carriers have increased regarding operating safety,...

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Volute pumps for hot water up to 230 °C SIHISuperNova ZEND 031125 ... 125250 - 15

15 Data regarding pump size Any changes in the interest of the technical development are reserved. Type + Pump size Hydraulic + Bearing Shaft sealing Material design Casing gasket A = hydraulic 1 BG3 = balanced standard 1B = main parts of 2 = confined flat S = grease lubricated mechanical seal spherodial cast iron gasket of graphite bearing 2B = main parts of cast steel with A4 insertion 031125 031160 031200 031250 1B 032160 032200 032250 040160 040200 040250 040315 050160 050200 050250 050315 065160 065200 065250 065315 080160 080200 080250 080315 100160 100200 100250 100315 125200 ZEND...

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