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SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608

SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608
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SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608 - 1

SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608 PUMP TECHNOLOGY CEH-X PIII/11 133.51302.51.01 E 07/2009 TECHICAL DATA Capacity: from 0.4 up to 7.5 m³/h Delivery head: from 10 up to 322 m Speed: 1450 rpm (max. 1800 rpm) Temperature: max. 120 °C max. 180 °C for high temperature design (higher temperatures on request) Casing pressure: PN 40 Shaft sealing: mechanical seal Flange connections: DIN 2501 / PN 40 Direction of rotation: anti-clockwise (when seen from the drive end) Protection classification: Ex II2 Gc T1-T5 APPLICATION The Sterling SIHI CEH-X 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-X 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 0.5 m. Different material possibilities with uniform dimensions and performance characteristics as well as the standard exchangeable components are used for the construction. The CEH-X pumps are 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-X is very suitable for the pumping of liquefied gases and liquids under vapour pressure like condensate, refrigerant, boiler feed or LPG. The CEH-X pumps have a retaining stage, combined with the low NPSH 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 CEH-X pumps are used for bottom off-loading of liquids under vapour pressure. DESIGN The pumps of the SIHIprime range are side channel pumps having segmental type construction. The construction of the CEH-X pump is a 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, currently, 3 sizes (1200, 3100 and 3600) each with 1-8 stages. The existing material design allows an optimum rating for the respectively desired performance range and the pumping medium. The applied hydraulic components are from our modular side channel system (interchangeability of parts). CONSTRUCTION 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. 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 Flanges in accordance with 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, greased for life, ball bearing according to DIN 625 and one liquid surrounded sleeve bearing. Rotation direction Anti-clockwise, when looking from the drive end. Shaft sealing The shaft is sealed by a mechanical seal according to DIN EN 12756, with quench connection. The shaft sealing is also available in a design suitable for heating or cooling of the mechanical seal and a double mechanical seal (backto- back as well as tandem) design is possible on request.

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SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608 - 2

CEH-X 2 Material design Material design GS Cast Iron/ GL Cast Iron Stainless steel Pos. Components TM TN 4B 2350 Vane wheel impeller G-X 3 CrNiMoCuN 26 6 3 3 CuZn40Al2 G-X 3 CrNiMoCuN 26 6 3 3 1060 Suction casing EN-GJS-400-18-LT G-X5 CrNiMoNb 18 10 1070 Discharge casing 1080 Low NPSH stage 1510 Shell casing 1090 First suction intermediate EN-GJL-250 1140 Side channel intermediate 1141 Last discharge intermediate 2310 Centrifugal impeller 2100 Shaft 4410 Mechanical seal casing X 20 Cr 13 X 5 CrNiMo 17 12 2 4420 Cooling insert 3600 Bearing cover EN-GJS-400-18-LT 0241 Bearing bush CY 10 C /...

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SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608 - 3

CEH-X 3 Sectional drawing and parts list Pos. Components 0241 Bearing bush 1060 Suction casing 1070 Discharge casing 1080 Low NPSH stage 1090 First suction intermediate 1140 Side channel intermediate 1141 Last discharge intermediate 1510 Shell casing 2100 Shaft 2310 Centrifugal impeller 2350 Vane wheel impeller 3600 Bearing cover 4330 Mechanical seal 4410 Mechanical seal casing 4420 Cooling insert 4420 1060 2310 1090 1140 1141 1070 4330 4410 3600 2100 1080 0241 2350 1510

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SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608 - 4

CEH-X 4 1 2 3 4 5 6 7 8 9 Operating principle The CEH-X pump is a combined system side channel pump. It is suited with a low NPSH centrifugal impeller (1) placed before the side channel stages. This NPSH inducer stage delivers enough pressure to overcome the entrance pressure loss of the first side channel stage or the required NPSH. A side channel stage consists of: „h A suction intermediate (2), „h A discharge intermediate including the side channel (3), „h A vane wheel impeller located between the 2 intermediates (4). The fluid entrance goes through the suction hole (5). The turning of...

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SIHIprime - Side Channel Pumps Self-priming, segmental type with very low NPSH CEH-X 1201 … 3608 - 5

CEH-X 5 Performance range General conditions Liquid: Water Density: 1 kg/dm3 Viscosity: 1 cSt Temperature: 20 °C Atmospheric pressure: 1013 mbar Characteristic tolerances The Side Channel pumps are not submitted to any normalized test tolerances. Here under are our acceptance values: Capacity ± 9% - Delivery head ± 7% - Power + 10%. Measuring standard According to ISO 5198. Note: 1) When using a liquid containing gas, a safety margin has to be added.

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