Volute pumps for hot water up to 180°C SIHISuperNova ZHND 032160 ... 1502500 pages

Volute pumps
for hot water up to 180°C
SIHISuperNova
ZHND 032160 ... 150250
PUMPTECHNOLOGY ZHN P I / 40
133.64810.53.01 E 02/2005
TECHNICAL DATA
Output: max. 600 m³/h
Delivery head: max. 95 m
Speed: max. 3600 rpm
Medium temperature: max. 180 °C
Casing pressure: PN 16
Shaft sealing: standard mechanical seal
uncooled
Flange connections: DIN EN 1092-2 PN 16
Sense of rotation: clockwise, when looking at the
pump from the drive end
APPLICATION
The volute pumps of the series ZHND are part of the overall
programme heat transfer and circutation pumps. They are primarily
used for circulation of hot water in closed pipe and vessel systems.
Therefore their fields of application are
the energy production,
the heat transport and
the industry
and here mainly in systems where hot water as heat carrier is given
preference, despite its high system pressure, over oil as heat
carrier.
DESIGN
Horizontal, single-stage volute pumps with dimensions and nominal
ratings to EN 733 in back pull out design.
The series ZHND has especially designed for the trouble free
handling of hot water up to 180 °C and is distinguished by:
• A heat barrier that causes an optimal energy consumption by
the pump and reduces the temperature level in the mechanical
seal chamber to less than 80 °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 22 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 16 bar from 0 °C up to 180 °C
Please note:
Technical rules and safty regulations.
max. casing pressure = inlet pressure + zero head
max test pressure = 21 bar
Flange location:
Axial suction flange, discharge flange radially upwards.
Flanges:
The flanges comply with DIN EN 1092-2 resp. PN 16.
Flanges drilled according to ANSI (previous ASA) 150 can
be supplied.
Hydraulic:
Designation of this construction type: A or B
Bearing:
One grease lubricated antifriction bearing to DIN 625 and
one internal liquid flushed sleeve bearing.
Designation of this construction type: .A
Direction of rotation:
Clockwise, when looking at the pumpfrom the drive end.
Shaft sealing:
Code BJ3: Unbalanced standard mechnical seal
Seal face materials SIC/carbon
Elastomer EPDM