Horizontal End-Suction Pump
Industrial Horizontal End-Suction Centrifugal Pump
Overview & Specifications
This horizontal end-suction centrifugal pump features a single-stage, back-pull-out design compliant with ISO 2858 / ISO 5199 dimensional and performance standards. Engineered for continuous heavy-duty industrial service, it handles clean or mildly contaminated liquids across municipal water networks, chemical processing plants, and HVAC installations.
Core Technical Specifications
|
Parameter |
Metric Range |
US Customary Range |
|
Flow Rate (Q) |
Up to 2,000 m3/h |
Up to 8,800 GPM |
|
Total Head (H) |
Up to 160 meters |
Up to 525 feet |
|
Operating Pressure |
Up to 1.6 MPa (16 bar) |
Up to 232 PSI |
|
Fluid Temperature |
-20°C to +120°C (higher with cooling option) |
-4°F to +248°F |
|
Speed |
1450 / 2900 RPM (50 Hz) |
1750 / 3500 RPM (60 Hz) |
|
Flange Rating |
PN16 / PN25 (ISO 7005-2) |
ANSI B16.5 Class 150 |
Hydraulic Performance & Selection
Selecting the correct hydraulic envelope prevents cavitation and reduces lifecycle energy loss.
Duty Point Matching: Operating the pump within 70% to 110% of its Best Efficiency Point (BEP) minimizes radial thrust and mechanical vibration.
NPSH Margin: Ensure system NPSHA exceeds pump NPSHR by at least 0.5 meters to prevent vapor bubble implosion and impeller pitting.
Impeller Trimming: Cast impellers are dynamically balanced to ISO 1940 Grade G6.3 and can be trimmed to exact duty point requirements, eliminating excessive throttling loss.
Construction, Materials & Manufacturing
Structural integrity relies on verified metallurgy and precision machining.
Material Options by Component
• Casing: Cast Iron (ASTM A48 Class 30B), Ductile Iron (ASTM A536 65-45-12), Stainless Steel (304 / 316 / 316L), Duplex Stainless Steel (2205).
• Impeller: Stainless Steel 316, Bronze (ASTM B584 C90700), Cast Iron.
• Shaft: AISI 420 or AISI 316 cold-rolled steel, ground and polished for low radial runout (<= 0.05 mm)
Manufacturing & Quality Control
• Casting Process: Resin sand casting ensures uniform wall thickness and smooth internal hydraulic passages, reducing hydraulic friction losses.
• Machining: CNC horizontal boring mills finish casing mounting feet and flange faces in a single setup, guaranteeing axial and parallel alignment within 0.03 mm tolerance.
• Hydrostatic Testing: Every pressure-containing casing undergoes hydrostatic testing at 1.5 times the maximum allowable working pressure (MAWP) for 30 minutes prior to assembly.
• Performance Testing: Factory acceptance tests (FAT) are conducted in accordance with ISO 9906 Grade 2B (or Grade 1
Shaft Sealing & Bearing Assembly
Mechanical Seal: Single or double mechanical seals configured to API 682 guidelines (Cartridge seals available). Standard faces: Carbon/Silicon Carbide with Viton or EPDM elastomers.
Bearing Arrangement: Deep-groove ball bearings or angular contact ball bearings lubricated by oil or grease. Rated L10h bearing life exceeds 100,000 hours under normal operating loads.
Back-Pull-Out Design: Allows removal of the entire bearing bracket, seal, and impeller without disturbing suction and discharge piping or the electric motor driver.
Typical Applications
Water Supply & Treatment: Municipal booster stations, raw water intake, and reverse osmosis feed systems.
HVAC Systems: Chilled water circulation, cooling tower water loops, and closed-circuit heat transfer.
Industrial Processing: General chemical transfer, washdown systems, pulp and paper mill white water, and metal finishing rinse tanks.
Frequently Asked Questions
Q: What is the primary advantage of the back-pull-out design?
A: The back-pull-out architecture permits complete maintenance access to the rotating assembly without dismantling the suction and discharge piping or uncoupling the driver baseplate. This reduces routine maintenance downtime by up to 60%.
Q: Can these pumps handle liquids with suspended solids?
A: Standard end-suction configurations are engineered for clean or mildly aggressive liquids with suspended solid concentrations below 50 mg/L and particle sizes under 0.5 mm. For abrasive slurries, specialized semi-open impellers and hardened material upgrades are required.
Q: How do you prevent mechanical seal failure during dry running?
A: Standard mechanical seals require fluid lubrication. Operating dry causes immediate face thermal shock and destruction. For applications prone to intermittent liquid supply, we recommend installing a dry-run protection sensor or selecting a flushed dual-seal arrangement with an external barrier fluid system.
Q: What motor mounting options and coupling types are available?
A: Pumps are supplied mounted on rigid structural steel or fabricated channel baseplates coupled to TEFC or Explosion-Proof electric motors (IEC or NEMA frames) via flexible spacer couplings. Laser alignment is performed prior to factory dispatch.
Q: What certifications and documentation are provided with shipment?
A: Each pump ships with an inspection certificate (EN 10204 3.1), material traceability reports, hydrostatic test reports, dynamic balancing records, and a comprehensive Installation, Operation, and Maintenance (IOM) manual.
Q: What standard lead time applies for standard ISO 2858 models?
A: Standard configurations utilizing cast iron or ductile iron casings with standard mechanical seals are typically available within 3 to 4 weeks. Custom metallurgies (Duplex Stainless Steel) or non-standard seal plans require 6 to 8 weeks.
Request a Technical Proposal & CAD Package
To receive an engineered selection proposal and complete documentation package for your project, please provide the following parameters:
• Fluid name, temperature, and specific gravity
• Required flow rate (Q) and head (H)
• Available NPSHA on site
• Power supply specifications (Voltage / Frequency / Phase)
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