End Suction Centrifugal pumps AHLSTAR

Summary

Product identification

The AHLSTAR range consists of end suction single stage centrifugal pumps, including A, N, W, and E series. These pumps are designed in accordance with ISO 5199 and ISO 2858 international standards.

Operating limits

General operating limits for AHLSTAR pumps:

• Liquid Temperature: Up to 210°C / 410°F
• Pressure: Up to 16/25 bar / 230/360 psi
• Gas content: Up to 70% (with integrated degassing units)
• Corrosion: pH from 0 to 14
• Liquid position: Below or above the pump

Specific operating data for AHLSTAR ranges:

AHLSTAR A range type A

• Capacities: Up to 11,000 m³/h / 48,400 USgpm
• Heads: Up to 160 m / 525 ft
• Temperatures: Up to 180°C / 356°F
• Frequencies: 50 or 60 Hz
• Pressures: 16/25 bar, 230/360 psi (depending on material and size)

AHLSTAR A range type APP/T

• Capacities: Up to 9,000 m³/h / 39,600 USgpm
• Heads: Up to 160 m / 525 ft
• Temperatures: Up to 180°C / 356°F
• Frequencies: 50 or 60 Hz
• Pressures: 16/25 bar, 230/360 psi (depending on material and size)

AHLSTAR N range type NPP/T

• Capacities: Up to 2,000 m³/h / 8,800 USgpm
• Heads: Up to 90 m / 295 ft
• Temperatures: Up to 180°C / 356°F
• Frequencies: 50 or 60 Hz
• Pressures: 16 bar / 230 psi (depending on material and size)

AHLSTAR W range type WPP/T

• Capacities: Up to 7,000 m³/h / 31,000 USgpm
• Heads: Up to 110 m / 360 ft
• Temperatures: Up to 180°C / 356°F
• Frequencies: 50 or 60 Hz
• Pressures: 16 bar / 230 psi (depending on material and size)

AHLSTAR E range type EPP/T

• Capacities: Up to 6,100 m³/h / 26,860 USgpm
• Heads: Up to 160 m / 525 ft
• Temperatures: Up to 210°C / 410°F
• Frequencies: 50 or 60 Hz
• Pressures: 25 bar / 360 psi

Feed water

AHLSTAR pumps are designed for a variety of liquids and conditions:

• Clean and slightly contaminated liquids
• Viscous liquids
• Fibrous slurries
• Non-fibrous slurries
• Liquids containing large solids
• Liquids with high gas content: up to 40% weakly bonded gases or up to 70% strongly bonded gases (with degassing units)
• Corrosive liquids: pH from 0 to 14

Electrical

• Frequencies: 50 or 60 Hz
• Motors:
  • Standard IEC dimensioned flange or flange/feet electric motor with heavy-duty bearing unit (for Long Coupled (LC) pumps)
  • Standard IEC dimensioned heavy-duty bearing motors in sizes IEC 90 to 280 (for Close Coupled (CC) pumps)
  • IMB5 flange motors for low-power applications
  • IMB35 flange/feet motors for high-power applications

Mechanical / hydraulic

• Pump Type: End suction single stage centrifugal pumps.
• Design Standards: ISO 5199 and ISO 2858.
• Impellers:
  • Versatile EnerSave™ impellers, including Low flow, Open, Special open, Vortex, Closed, Non-clogging closed (channel type), Non-clogging vortex, Wear-resistant open, Wear-resistant vortex, Wear-resistant closed, and Low pulse options.
  • Patented balancing holes ensure efficient liquid circulation behind the impeller and in the seal chamber.
  • Externally adjustable patented side plate allows fast and simple impeller clearance setting.
  • Robust, reliable, and patented Rotokey impeller mounting for fast dismantling and reassembly.
• Shaft: Heavy-duty shaft reduces deflection at the stuffing box to <0.05 mm / 0.002 in.
• Bearing Unit:
  • Reliable, simplified, heavy-duty bearing unit.
  • Lubrication options: grease lubrication for applications up to 120°C / 250°F; oil lubrication for up to 180°C / 355°F.
  • Exceeds ISO 5199 standard life cycle of 17,500 hours.
  • Innovative, non-contacting bearing isolators with a deflector, lip seal, and labyrinth for triple bearing protection.
• Shaft Seals:
  • Proven WaterLess™ shaft seals, including effective dynamic, single, and double mechanical seals, and gland packing.
  • Self-venting throttled seal chamber Sulzer integrated single mechanical seal: Ideal for clean liquid applications with negative pump suction head (internal flushing) up to 140°C / 285°F. Also suitable for non-fibrous slurries with external flushing up to 180°C / 355°F.
  • Optimal bore Sulzer integrated single mechanical seal: Custom-designed for fibrous slurries up to 8% consistency without flushing water, with positive pump suction head. Suitable for clean or viscous liquids and liquids containing large solids. Liquid temperatures 10°C / 20°F below boiling point.
  • Optimal bore Sulzer integrated double mechanical seal: Designed for all consistencies and concentrations of clean, viscous, fibrous slurries, non-fibrous slurries, and liquids containing large solids. Suitable for negative or positive pump suction head, up to 180°C / 355°F.
  • Trusted Sulzer dynamic seal: Custom-designed for fibrous slurries, also suitable for clean, viscous, or non-fibrous slurries and liquids containing large solids. Requires no external sealing water and does not leak. Suitable for applications with positive pump inlet head and a temperature below boiling point.
  • Other options include ready-fitted mechanical seals, standard element mechanical seals, cartridge mechanical seals (can be designed to ISO 5199 or API 682 standards), and classic gland packing.
• Degassing and Self-priming Units:
  • Integrated degassing and self-priming units (LM or S liquid ring pumps, GM, GS or R gas separators) stabilize pumping of liquids containing up to 40% weakly bonded gases or up to 70% strongly bonded gases.
  • Enable fast, reliable pump start-up when starting with an empty inlet pipe.
• Interchangeability: The AHLSTAR range features high interchangeability with 173 wet end sizes, 24 sealing unit sizes (with 7 common shaft seal sizes), and 7 common bearing units. Common sealing water equipment, couplings, coupling guards, and baseplates are also used.
• Sealing Water Equipment:
  • Automatic constant flow: Regulates sealing water to a constant 2 l/min / 0.5 USgpm. Incoming supply pressure must be at least 0.5 bar / 7 psi higher than in the seal chamber.
  • Classic adjustable: Allows regulation of sealing water volume, typically 3 - 5 l/min / 0.8 - 1.3 USgpm. Incoming supply pressure must be at least 0.5 bar / 7 psi higher than in the seal chamber.
  • Sulzer integrated smart flow: Automatically reduces sealing water volume to the minimum required, offering potential water savings of up to 90%. Incoming supply pressure must be at least 0.5 bar / 7 psi higher than in the seal chamber.
  • Seal pot: Reservoir pressure must be at least 0.5 bar / 7 psi higher than in the seal chamber. Reservoir base must be installed at least 500 mm / 20 inches above the seal chamber centerline. Maximum process temperature of 100°C / 212°F, maximum pressure of 16 bar / 230 psi. Potential water savings of up to 96%.
• Installation Options:
  • Long Coupled (LC) pumps with T-frame, ISO rectangular, or API rectangular baseplates.
  • Close Coupled (CC) pumps allow direct installation on the floor or rig without a baseplate, eliminating the need for coupling alignment.
• Materials:
  • Stainless steel designs: Includes Duplex (e.g., ASTM A890 3A, 1B, 5A), Austenitic (e.g., ASTM A743 CF-8, AVESTA 654 SMO), Martensitic (e.g., ASTM A747 CB7Cu-2), and Ferritic (e.g., ASTM A743 CC50 (mod)) grades.
  • Carbon steel, cast iron, titanium designs: Includes Cast iron (e.g., ASTM A48 CL 35 B), Chromium iron (e.g., ASTM A532 IIIA), Carbon steel (e.g., ASTM A216 WCB), and Titanium (e.g., ASTM B367 C-3).
  • Gasket materials: Reinz AFM34 (Y6) for -50°C/-58°F to +250°C/+482°F; PTFE/Glass (84) for -190°C/-310°F to +240°C/+464°F.
  • O-ring materials: EPDM (92) for -50°C/-58°F to +150°C/+302°F; FKM (93) for -20°C/-4°F to +200°C/+392°F.
  • See the official PDF for exact tabulated values and nominal chemical compositions.
• Surface Treatment:
  • Internal: Standard surface cleaning, Ground Ra 6.3 surfaces, Cotton ball tested surfaces, Hardening with plasma nitration, Cleaning for peroxide applications, Cleaning for drinking water applications. Special treatments available on request.
  • External: ISO 12944-2 C4 painting for normal applications and high temperatures (>150°C / 300°F); ISO 12944-2 C5M painting for marine applications. Special treatments available on request.
• Tests and Certifications:
  • Performance tests: Capacity, head, efficiency, and NPSHr tests (ISO 9906:2012 / HI 14.6-2011), Noise tests, Vibration test (ISO 5199), Mechanical tests (HI 14.6:2011), Pressure pulsation test.
  • Material and NDT tests: EN 10204.2.2 and 3.1, Liquid penetration (ISO 1371-1 level 3), Magnetic particle examination (ISO 1369 level 3), PMI (Positive Material Identification).
  • Structural tests: Balancing of impellers (ISO 1940 grade 6.3 and 2.5 static and dynamic), Hydrostatic pressure test (ISO 5199:2002).
  • Inspection of assembly: Dimensional checking of installation and clearances, Paint film thickness checking, Final assembly checking.
  • Legislation & Standards Compliance: Directive 2006/42/EC (Machinery), Directive 93/68/EEC (CE Marking), Directive 94/9/EC (ATEX, Equipment categories II 2G and II 3G, Temperature classes T1-T4), EN 809:1998 + A1:2009 (Pumps safety), EN ISO 12100-2010 (Machinery safety), EN ISO 9001:2008 (Quality management), EN ISO 14001:2004 (Environmental management), OHSAS 18001:2007 (OH&S management), EN ISO 2858:2010 (Dimensions), EN ISO 5199:2002 (Design), EN ISO 9906:2012 / HI 14.6-2011 (Hydraulic performance), EN 10204:2004 (Metallic products inspection documents), EN 735:1995 (Overall dimensions tolerances).
  • Flange Drilling Standards: ISO 7005-2:1988 (PN10, PN16), ASME B16.1:2010 (Class 25, 125, 250), ASME B16.5:2009 (Class 150, 300), JIS B 2220:2012 (10K, 16K, 20K, 30K), JIS B 2239:2004 (10K, 16K), EN 1092-1:2007 + A1:2013 (PN10, PN16, PN25), EN 1092-2:1997 (PN10, PN16).

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

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