Catalogue - Series ZLI, 140 m³/h, 60 m, 150 °C0 pages

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Volute pumps

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for hot water

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ZLI 25-125

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80-200

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TECHNICAL DATA

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output:

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delivery head:

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speed:

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material:

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temperature:

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casing pressure:

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shaft seal:

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flange connection:

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sense of rotation:

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max. 140 m3/h

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max. 60 m

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max. 3600 1/min

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spheroidal graphite iron

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max. 150 °C

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PN 25

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standard mechanical seal

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DIN 2501 PN 25

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clockwise when seen from drive

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on the pump

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APPLICATION

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Volute pumps of the series ZLI belong to the programm of heat

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carrier circulation pumps. These pumps in inline design have been

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constructed as space saving and easy to install pumping units with

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standard motor.

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They will be mainly used for circulating hot water in closed pipe

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systems and vessel systems.

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The field of applications are

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production of energy

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heat transfer

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and other industries

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BAUAUSFUHRUNG

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Casing pressure:

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Material design max. 24 bar from 140 °C up to 150 °C.

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Please note:

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Technical rules and safety regulations.

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Casing pressure = inlet pressure + delivery head with zero flow

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Position of branches:

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Suction and discharge branch radially arranged opposite to each

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other.

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Flanges:

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DESIGN

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Single-stage resp. two-stage pumping units in compact design with

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nominal performances according to DIN 24255 / EN 733 as well as

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additional size DN 25, where suction and discharge branch are

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arranged opposite to each other for direct installation into the pipe

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work.

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There is no common shaft for motor and pump. The motors used are

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standard motors.

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Due to the process design it is possible to withdraw the whole insert

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unit without detaching the pump casing from the pipe work.

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By means of the unit construction system of the additional size DN 25

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the single-stage and the two-stage design have the same dimensions.

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The performance of the pump is optimally adapted to the service point

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by mounting or dismounting a stage.

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The individual shafts of the unit connected by a plug-in coupling

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facilitate the dismantling or the replacement of the motor without

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affecting the pump.

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At present the programm comprises 10 construction sizes.

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The flanges correspond to DIN 2534/PN 25. Flange design

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drilled as per ANSI 300 is possible.

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Hydraulic:

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First hydraulic.

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Second hydraulic.

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Bearing:

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Code of this construction: R»

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Code of this construction: S»

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Two grease-lubricated antifriction bearings to DIN 625 in the

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motor, one antifriction bearing grease-lubricated for service-life

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according to DIN 625 in the bearing bracket.

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Code of this construction: "V

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Sense of rotation:

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Clockwise when seen from drive on the pump.

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Shaft sealing:

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The shaft sealing is a single mechanical seal, flushed from

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internal source, uncooled and balanced.

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Code AAE: sliding material SiC/carbon for hot water

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without abrasive admixtures.

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Temperature range up to 150 °C

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133.64610.54.01 E

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PUMPTECHNOLOGY ZLI P 1/19

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06/98

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