Catalogue - Series SIHISuperNova ZDN, 600 m³/h, 90 m, 207 °C0 pages

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Volute pumps

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for hot water up to 207°C

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SIHI

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SuperNova

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STER LI		IMG
■	SIHI	■

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ZDND 032160 ... 125250

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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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Temperature:

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Casing pressure:

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Shaft sealing:

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Flange connections:

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Sense of rotation:

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max. 600 rrïVh

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max. 90 m

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max. 3600 rpm

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max. 207 °C

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PN25

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balanced standard mechanical seal,

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uncooled

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DIN EN 1092-2 PN 40

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clockwise, when looking at the

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Pump from the drive end

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APPLICATION

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The volute pumps of the series ZDHD are part of the overall

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programme heat transfer and circulation pumps. They are primarily

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used for circulation of hot water in closed pipe and vessel systems.

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Therefore their fields of application are

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the energy production,

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the heat transport and

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the industry

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and here mainly in systems where hot water as heat carrier is given

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preference, despite is high system pressure, over oil as heat carrier.

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DESIGN

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Horizontal, single-stage volute casing pumps with the dimensions

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ans nominal ratings to DIN EN 22858 in back pull out design, with

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uncooled balanced mechanical seal.

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The series ZDND has especially been designed for the trouble free

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handling of hot water up to 207 °C and is distinguished by:

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• A double heat barrier that causes an optimal energy

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consumption by the pump and reduces the temperature level in

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the mechanical seal chamber to less than 90 °C without

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external cooling circuit (see temperature curve on page 3). The

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service life of the mechanical seal increases considerably.

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• A special design that automatically leads accumulation of gas to

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exhaust. Consequently the dry operation of the mechanical seal

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can be excluded.

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• A programme that comprehends 22 construction sizes and thus

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guarantees an optimal solution for every operating point.

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• The back pull out design, which permits the removal of the

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complete, bearing unit towards the drive side without removing

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the pump casing from the pipe work. If a spacer coupling is

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installed it is also unnecessary to disconnect the motor.

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CONSTRUCTION

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Casing pressure

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Max 25 bar from 0 °C up to 207 °C

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Please note:

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Technical rules and safety regulations.

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Casing pressure = inlet pressure + zero head

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max. test pressure = 33 bar

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Flanges location:

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Axial suction flange, discharge flange radially upwards.

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Flanges:

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The flanges comply with DIN EN 1092-2 resp. PN 40.

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Flange design to ANSI 300 is possible.

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Hydraulics:

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Designation of this construction type: A

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Bearing:

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One grease lubricated antifriction ball bearing to DIN 625

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and one internal liquid flushed sleeve bearing.

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Designation of this construction type: A

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Direction of rotation:

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Clockwise when looking at the pump from the drive end.

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Shaft sealing:

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Code AF3: Balanced standard mechanical seal

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Seal face materials SIC/Carbon, Elastomer

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EPDM

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133.64801.54.01 E

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PUMPTECHNOLOGY ZDND PI/40

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01/2005

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