Overview

This document provides detailed specifications, design features, applications, and technical data for the CPKN series of standardized chemical pumps. These pumps comply with EN 22858, ISO 2858, and ISO 5199 standards and are suitable for handling aggressive organic and inorganic fluids across multiple industries such as chemical, petrochemical, refinery off-sites, paper, food, sugar, seawater desalination, environmental engineering, and power stations.

Product Range and Automation

• Automation options include PumpExpert, PumpDrive (MM), Hyamaster, and hyatronic systems.
• Pump sizes range from DN 25 to DN 400, with capacities up to 4150 m³/h and heads up to 185 m.
• Operating pressures reach up to 25 bar, and temperature ranges span from -40°C to +400°C.

Design and Construction

• Horizontal, radially split volute casing with back pull-out design and single-entry, single-stage radial impeller.
• Modular design facilitates easy maintenance; lubrication via constant-level oiler; metal-to-metal impeller attachment enhances safety.
• Material variants (S1, S2, C1, C3, E) use diverse wetted materials such as 1.4408, JS1025, GP240GH+N, Noridur, tailored to application needs.
• Special design options include heated models (H), open impellers (O), off-standard flange designs (F), intensively cooled shaft seal chambers (K), and other custom designs (X).
• Double volute casing available for certain sizes to balance axial thrust.

Operating Limits and Conditions

• Temperature and pressure limits depend on material and design; heated models can handle up to 300°C and pressures up to 20 bar depending on heating medium.
• Hot water applications supported with compliance requirements for pumps outside hot water generation plants.
• Shaft sealing options include gland packing and mechanical seals, convertible without casing cover modifications.
• Mechanical seals conform to EN 12756, available as single or double acting, with quenching media options.
• Maximum permissible discharge pressures and temperatures are detailed in selection charts based on pump size and material variant.

Technical Data

• Includes impeller dimensions (inlet diameter, outlet width, max/min diameters), shaft diameters at various points, bearing types and arrangements, and drive power parameters.
• Pressure and temperature limits align with ISO 5199 standards.
• P/n-values and drive power data are available upon request, dependent on material and temperature.

Mechanical Seals and Shaft Sealing

• Supports multiple mechanical seal manufacturers (Burgmann, Flowserve, Crane, KSB).
• Seal types include unbalanced and balanced single-acting and double-acting seals, with cartridge options.
• Seal arrangements adaptable for heated models and various seal chamber designs (conical, cylindrical).

Testing, Certification, and Quality Assurance

• Quality management certified to ISO 9001.
• Material and product tests available on request (e.g., Test report 2.2, Inspection certificate 3.1).
• Hydraulic performance tests conducted for each pump with guaranteed duty points per ISO 9906/2A.
• Additional acceptance tests (performance and NPSH) available at extra cost.

Coating, Preservation, and Documentation

• Coating standards per works standard AN 1865, with options including reaction primers, synthetic enamel, heat-resistant enamel, or untreated parts depending on temperature and pump variant.
• Preservation involves water-repellent rinsing and protective coatings to prevent rust.
• Comprehensive documentation includes assembly drawings, sectional views, installation plans, and CE-compliant operating instructions.

Installation and Dimensions

• Flange connection standards per EN 1092-1 and EN 1092-2 with PN 16 and PN 25 ratings.
• Standardized shaft end keying per DIN 6885/Sh 1.
• Clearance specified for dismantling without motor removal.
• Standardized connections for pressure gauges, casing drains, cooling liquids, leakage drains, sealing and flushing liquids, oil drains, vent plugs, condensate drains, heating liquid inlets/outlets, quench liquid, and constant-level oilers based on bearing bracket size.

Recommended Spare Parts Stock

Guidelines for maintaining a two-year spare parts inventory based on the number of pumps in operation. Recommended parts include shafts, impellers, bearings, mechanical seals, neck bushes, gland packing, casing wear rings, shaft protecting sleeves, gaskets, and torque transmission elements.

Benefits Summary

• Extended service life of bearings and mechanical seals due to low radial forces.
• Easy maintenance enabled by constant-level oiler and modular design.
• Safety ensured by metal-to-metal impeller attachment.
• Wide application range supported by diverse materials and design variants.
• Reliable operation with sturdy bearing assembly and oil lubrication, achieving bearing life exceeding 25,000 operating hours.
• Reduced shaft deflection through reinforced shafts and protective sleeves.
• Universal installation chamber accommodates standardized and cartridge-type mechanical seals.

Component Specifications and Dimensions

Extensive tabular data covers pump sizes, impeller diameters, bearing sizes, bolt dimensions, and other mechanical parameters critical for part selection and manufacturing. Dimensions range broadly to accommodate various pump models and configurations.

General Assembly and Spare Parts Ordering Instructions

• Ordering requires complete and precise information: pump type, series, size, works number (from nameplate and suction flange), motor serial number, year of manufacture, quantity, part number, description, material, fluid handled, sectional drawing number, and dispatch mode.
• This ensures accurate identification and supply of components.

Scope of Supply for Components

Includes volute casings with joint rings, casing wear rings, studs, plugs, nuts, casing covers, O-rings, support feet with bolts, shafts with keyways, impellers with joint rings, angular contact ball bearings, cylindrical roller bearings, bearing brackets with covers and gaskets, lip seals, mechanical seals, support discs, vent plugs, socket head cap screws, circlips, bearing lanterns with O-rings, pipe unions, drip pans, guards, and bypass pipes.

Bearing and Seal Details

Details angular contact ball bearings and cylindrical roller bearings with associated components. Mechanical and lip seals are integrated into the pump assembly with various design options.

Assembly and Modification Notes

• Some parts (e.g., impeller nuts, socket head cap screws) may not be illustrated depending on pump version or bearing bracket type.
• Technical modifications may occur without prior notice; users should verify latest specifications before ordering or manufacturing.

Key Recommendations and Best Practices

• Always provide complete and precise information when ordering spare parts to avoid errors.
• Consult sectional and general assembly drawings for correct part identification.
• Stay informed of possible technical modifications and verify current specifications before procurement or manufacturing.

Summary of Critical Parameters

• Pump sizes and impeller diameters cover a broad range with specific series designations (e.g., UP 02, UP 03, UP 04, UP 05, P 08s, P 10as, P 12s).
• Component dimensions such as bolt sizes, bearing dimensions, and seal types are standardized and referenced by part numbers.
• Material selection and fluid handled are critical for correct part selection.

Conclusion

This document is a comprehensive technical reference for the CPKN pump series, covering component specifications, assembly details, operating limits, testing, and ordering procedures. It is essential for maintenance, repair, and manufacturing teams to follow the detailed instructions and data to ensure pump system compatibility, safety, and performance.