Catalogue - Series ADH, 7.2 m³/h, 250 m, 120 °C0 pages

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Side Channel pumps

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Self-priming, segmental type

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ADHL/CDHL0801 ... 2504

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AEHL 0805 ... 0808

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STERLING

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Technical data

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Capacity:

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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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Direction of rotation:

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from 0,3 up to 7,2 m3/h

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from 20 up to 400 m

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2900 rpm (max. 3400 rpm for ADH 0800/0900)

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max. 120 °C

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PN 25 for ADHL/CDHL

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PN40 for AEHL

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stuffing box or

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standard mechanical seal

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DIN 2501 /PN25 and PN 40

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clockwise

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(when seen from the drive end)

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Application

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The Sterling SIHI ADHL/AEHL and CDHL pumps are self-

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priming side channel pumps capable of handling gas along

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with the medium and operates at a low noise level.

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The ADHL/AEHL series are used to handle clear or turbid

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liquids, under high heads and without any abrasive particles,

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reliably and trouble-free. The CDHL with NPSH-improving

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inducer stage are used when liquids under critical suction

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conditions have to be handled reliably and trouble-free.

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With these pumps a safe and efficient pumping service can

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be achieved even if the net positive suction head available is

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low.

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The number of hydraulic stages are as is customary in the

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boiler industry.

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The performance curve steepness admits a precise regulation

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of the pressure with a small change in capacity.

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The pumps are used in;

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• Boiler industry for condensate and boiler feed water

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handling,

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• Washing, cleaning and spraying plants,

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• Dry cleaning.

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Design

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The pumps of the ADHL/AEHL and the CDHL series have a

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segmental construction with open vane wheel impellers.

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The CDHL pumps (combination pumps) are equipped with

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open impellers as well as a suction side centrifugal stage for

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attaining superior characteristics with respect to the Net

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Positive Suction Head (NPSH).

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The pumps of the ADHL/CDHL/AEHL series are side channel

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pumps of the high-speed type that have been designed with

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special regard to noiseless running. The program comprises

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6 sizes.

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Construction

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Casing pressure

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Maximum 25 bar from 0 °C up to +120 °C for ADHL/CDHL

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Maximum 40 bar from 0 °C up to +120 °C for AEHL

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Please observe

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Technical rules and safety regulations:

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Casing pressure = inlet pressure + delivery head at minimum

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pump capacity.

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Position of branches

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Suction and discharge branch point radially upwards.

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Flanges

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The flanges correspond to DIN EN 1092-2, PN 25 for ADHLV

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CDHL and PN 40 for AEHL. Flanges drilled according to ANSI

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150 or 300 lbs are basically possible.

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Bearing

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One grease lubricated ball bearing according to DIN 625

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and one liquid surrounded sleeve bearing (design A). The

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first grease filling is done in the factory.

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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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The shaft can be sealed by a stuffing box or a standard

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mechanical seal.

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Sterling Fluid Systems Pumping Technology ADHLVCDHL/AEHL-00 / 2003

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