Series CEH, 35 m³/h, 354 m, 180 °C
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Catalog excerpts

Series CEH, 35 m³/h, 354 m, 180 °C - 1

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) 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). 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).

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Series CEH, 35 m³/h, 354 m, 180 °C - 2

CEH Material design Cast iron and ductile iron Material design Suction casing Discharge casing Intermediate piece Vane wheel impeller Bearing housing Mechanical seal casing Bearing bush * Bearing bush in carbon antimony is used only in the high temperature design. This high temperature design is also provided with cup springs and a cooled stuffing box or cooled mechanical seal. Stainless steel Material design Suction casing Discharge casing Intermediate piece Vane wheel impeller Bearing housing Mechanical seal casing Bearing bush * Bearing bush in carbon antimony is used only in the high...

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Series CEH, 35 m³/h, 354 m, 180 °C - 3

Bearing bush Suction casing Discharge casing Intermediate piece Retaining stage Suction intermediate piece Discharge intermediate piece Discharge intermediate piece Shaft Impeller Vane wheel impeller Bearing housing Mechanical seal Mechanical seal casing Cooling insert Stuffing box casing Stuffing box CEH with mechanical seal Unbalanced as well as balanced mechanical seals are available. CEH /7 with retaining stage Cooled mechanical seal

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Series CEH, 35 m³/h, 354 m, 180 °C - 4

CEH Performance range General conditions Liquid: Density: Viscosity: Temperature: Atmospheric pressure: Water 1 kg/dm³ 1 cSt 20 °C 1013 mbar Characteristic tolerances Capacity ± 5% - Delivery head ± 5% - Power + 10% For designs with a mechanical seal or a casing seal of soft Teflon, the tolerance for the delivery head is extended by 2% each. Measuring standard According to ISO 5198. = Maximum for CEH /7 (with retaining stage) = Minimum for CEH /5 (e.g. LPG handling), CEH/7 n = 1450 1/min The NPSH curve is suitable for liquids without gas. When using a liquid containing das (e.g. water 20°C)...

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Series CEH, 35 m³/h, 354 m, 180 °C - 5

CEH Dimension chart, pump set drawing and performance curves CEH 1200 and CEH 1200/5 n = 1450 1/min Values are valid for water at 1 kg/dm³ and Viscosity at 1 cSt. Capacity ± 5% - Delivery head ± 5% - Power + 10% For designs with a mechanical seal or a casing seal of soft Teflon, the tolerance for the delivery head is extended by 2% each. Pump size 1201 1202 * Dimensions depend upon the motor brand. 1) Not for design CEH /5, 2) for EExe II T3 motors, 3) A safety margin of 1 m has to be added when using a liquid containing gas. The weight for stainless steel will be approximately 6% higher.

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Series CEH, 35 m³/h, 354 m, 180 °C - 6

CEH Dimension chart, pump set drawing and performance curves CEH 3100 and CEH 3100/5 n = 1450 1/min Values are valid for water at 1 kg/dm³ and Viscosity at 1 cSt. Capacity ± 5% - Delivery head ± 5% - Power + 10% For designs with a mechanical seal or a casing seal of soft Teflon, the tolerance for the delivery head is extended by 2% each. Pump size 3101 3102 3103 3104 * Dimensions depend upon the motor brand. 1) Not for design CEH /5, 2) for EExe II T3 motors, 3) A safety margin of 1 m has to be added when using a liquid containing gas. The weight for stainless steel will be approximately 6%...

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