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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C

Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C
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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 1

Volute pumps TECHNICAL DATA delivery head: casing pressure: shaft seal: flange connection: spheroidal graphite iron standard mechanical seal clockwise when seen from drive Volute pumps of the series ZLI belong to the programm of heat carrier circulation pumps. These pumps in inline design have been constructed as space saving and easy to install pumping units with standard motor. They will be mainly used for circulating hot water in closed pipe systems and vessel systems. heat transfer Casing pressure: Material design max. 24 bar from 140 °C up to 150 °C. Please note: Technical rules and safety regulations. Casing pressure = inlet pressure + delivery head with zero flow Suction and discharge branch radially arranged opposite to each Single-stage resp. two-stage pumping units in compact design with nominal performances according to DIN 24255 / EN 733 as well as additional size DN 25, where suction and discharge branch are arranged opposite to each other for direct installation into the pipe There is no common shaft for motor and pump. The motors used are standard motors. Due to the process design it is possible to withdraw the whole insert unit without detaching the pump casing from the pipe work. By means of the unit construction system of the additional size DN 25 the single-stage and the two-stage design have the same dimensions. The performance of the pump is optimally adapted to the service point by mounting or dismounting a stage. The individual shafts of the unit connected by a plug-in coupling facilitate the dismantling or the replacement of the motor without At present the programm comprises 10 construction sizes. The flanges correspond to DIN 2534/PN 25. Flange design drilled as per ANSI 300 is possible. First hydraulic. Second hydraulic. Code of this construction: R» Code of this construction: S» Two grease-lubricated antifriction bearings to DIN 625 in the motor, one antifriction bearing grease-lubricated for service-life according to DIN 625 in the bearing bracket. Code of this construction: "V Clockwise when seen from drive on the pump. Shaft sealing: The shaft sealing is a single mechanical seal, flushed from internal source, uncooled and balanced. Code AAE: sliding material SiC/carbon for hot water without abrasive admixtures.

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 2

Material design Casing seal: The casing sealing will be made by a special paper. Denomination of this construction: 2 Drive / Speed: By commercial electric motors, types IM B 35 resp. IM V 15 for n = 2900 rpm, n = 1450 rpm from size 180 M For the determination of drive power we recommend the following additional power: Please note: the max. admissible motor power of some construction sizes are shown in the individual characteristic curves. The max. speeds results from the admissible shaft load and from the admissible peripheral speed of the impellers. ZLI-pumps can be mounted either...

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 3

Sectional drawing and nomenclature 48.70 stationary seal ring support Standard set of components / bearing bracket - plug-in coupling / standard motor* / space requirements by adding a special bearing bracket (DBP) of the standard set of components which consits of pump casing, casing cover, impeller and mechanical seal an inline pump has been created which is easy to combine. The bearing removes the standard motor from the load of hydraulic forces and allows suitable motor combinations at the complete mounted pumping unit. Motor combination = motor at your choice + shaft sealing pump unit...

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 4

Performance graph n = 2900 rpm Performance graph n = 1450 rpm 4

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 5

Characteristic curves

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 6

Characteristic curves

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 7

Characteristic curves Characteristic curves

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 9

Characteristic curves The NPSH-value has been determined in close circuit. As safety addition for the pressure corresponding to NPSH are to be Values are valid for water

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 10

Dimension table n = 2900 rpm ZLI 25-125 / 25-160 Fixing of feet (if required) Space for larger motor ue = connection for drainage G 1/4 ZLI 40-165 ... 80-200 Space for larger motor ue = connection for drainage G 1/4 10

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 11

Dimension table Truth of rotation, centricity and right angle of shaft ends and mounting flanges as per dimension depend on the motor make.

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Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C - 12

Angaben zur Baugröfte - Bestellhinweise Applicable motors please take from the dimension table on page 10 and 11. If you need the type od construction IM V 1 (vertical installation), please inform us accordinglybesonderer Hinweis. On delivery the point (■) in the fourth place of the type designation will be replaced by a letter in the factory. Any changes in the interest of the technical development are reserved. Sterling SIHI GmbH

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