Series CEH, 35 m³/h, 354 m, 180 °C0 pages

Side Channel Pumps
Self-priming, segmental type with verly low NPSH

CEH
Sizes 1201 … 6108, 1202/5 … 6108/5, 1202/7 … 6107/7
Technical data
Capacity:
Delivery head:
Speed:
Temperature:

Casing pressure:
Shaft sealing:
Flange connections:
Direction of rotation:

max. 35 m³/h
max. 354 m
max. 1800 1/min
max. 120 °C
max. 180 °C for high temperature
design (higher temperatures
upon request)
PN 40
Stuffing box or mechanical seal
DIN 2501 / PN 40
anti-clockwise
(when seen from the drive end)

Application

Construction

The SIHI CEH pump is a self-priming side channel pump
capable of handling gas along with the medium and
operates at a low noise level.
The CEH pumps are used for problem-free pumping of
clean liquids at unfavourable suction side conditions. They
are also very suitable for positive suction heads below 0.5m.

Casing pressure
Maximum 40 bar from -40 °C up to +120 °C.
Maximum 32 bar from +120 °C up to +180 °C.
Pressure stages for temperature as per DIN EN 1333.

The different material possibilities with uniform dimensions
and performance characteristics as well as the standard
exchangeable components, make the CEH particularly
recommendable for applications in the pharmaceutical,
chemical or petrochemical market as well as in the plastic or
oil industry. Because of its low NPSH and positive suction
head the CEH is very suitable for the pumping of liquefied
gasses and liquids under vapour pressure like condensate,
refrigerant, boiler feed water or LPG.
The pumps of the CEH /7 series have a retaining stage to
avoid the dry running by controlling the liquid level in the
pump. This design is especially developed for the handling
of liquids under vapour pressure or when pumping from
underground tanks. The series CEH /5 are used for bottom
off-loading of liquids under vapour pressure.

Design
Pumps of the series CEH have a segmental type
construction with open vane wheel impellers. The
construction of the CEH pump is a so-called centrifugal
combined system. This combination pump is suited with a
centrifugal stage in serial connection before the side
channel stages to obtain a more favourable NPSH.
The program comprises 6 sizes each with 1-8 stages. The
existing material design allows an optimum rating for the
respectively desired performance range and the pumping
medium.
Pumps of the series CEH /7 are equal to the CEH series but
equipped with a retaining stage. This program comprises 6
sizes with 2-7 stages. The series CEH /5 have also 6 sizes
but with 2-8 stages.
The applied hydraulic components are from our Modular
Side Channel system (interchangeability of parts).

133.51301.60.01 E

Please observe
Technical rules and safety regulations.
Casing pressure = inlet pressure + delivery head at
minimum pump capacity.
Position of branches
Axial suction branch, discharge branch points radially
upwards.
Flanges
The flanges correspond to DIN EN 1092-2 / PN 40.
Flange design as per DIN 2512 with groove or drilled
according to ANSI 150 or 300 lbs is basically possible.
Bearing
One grease lubricated ball bearing according to DIN 625
and one liquid surrounded sleeve bearing (design A). The
ball bearing is greased for life.
Direction of rotation
Anti-clockwise, when looking from the drive end.
Shaft sealing
The shaft can be sealed by a stuffing box or a mechanical
seal conform DIN EN 12756. The shaft sealing is also
available in a design suitable for heating or cooling of the
stuffing box or the mechanical seal.
Double mechanical seal (back-to-back as well as tandem)
or a quench design with throttle bush are available upon
request. The CEH can also be supplied with a magnetic
coupling (for information see the separate catalogue).

PUMP TECHNOLOGY CEH
05/2015