EN 735:1995

Overall dimensions of rotodynamic pumps - Tolerances

This European Standard specifies the acceptable tolerances for overall dimensions of rotodynamic pumps with particular requirements for horizontal, single stage, end suction centrifugal pumps.

Anschlußmaße für Kreiselpumpen - Toleranzen

Diese Europäische Norm legt die zulässigen Toleranzen (Abweichungen und Toleranzfelder) für Anschlußmaße von Kreiselpumpen fest, mit besonderen Anforderungen für einstufige, horizontale Spiralhäusekreiselpumpen mit axialemEintritt.

Dimensions d'encombrement des pompes rotodynamiques - Tolérances

La présente norme prescrit les écarts et tolérances admissibles des dimensions d'encombrement des pompes rotodynamiques avec des exigences particulières pour les pompes centrifuges horizontales, monoétagées, à aspiration axiale.

Overall dimensions of rotodynamic pumps - Tolerances

General Information

• Status: Published
• Publication Date: 25-Apr-1995
• ICS: 23.080 - Pumps
• Technical Committee: CEN/TC 197 - Pumps
• Drafting Committee: CEN/TC 197 - Pumps
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 20-May-2022
• Completion Date: 11-Feb-2026
• Ref Project: SIST EN 735:2000 - Overall dimensions of rotodynamic pumps - Tolerances

Overview

EN 735:1995 - Overall Dimensions of Rotodynamic Pumps - Tolerances is a European Standard developed by CEN. This standard specifies the acceptable dimensional tolerances for rotodynamic pumps, with a focus on horizontal, single stage, end suction centrifugal pumps. EN 735:1995 establishes a unified framework for the allowable deviations in the external dimensions of these pumps, supporting consistency in manufacturing, interchangeability, and installation across Europe.

This standard is critical for pump manufacturers, designers, installers, and quality assurance professionals who require precise specifications for the overall size and tolerance of rotodynamic pumps, ensuring operational compatibility with various systems and components.

Key Topics

• Standardized Tolerance Specifications
  Establishes permitted deviations for the main external dimensions of horizontal, single stage, end suction centrifugal pumps.

• Pump Compatibility and Interchangeability
  Facilitates the replacement and interchange of pumps from different manufacturers, minimizing the risk of misfit during installation.

• Quality Control in Manufacturing
  Provides guidelines for quality assurance teams to verify compliance with accepted dimensional tolerances, leading to higher reliability and reduced rework.

• Design and Installation Consistency
  Offers pump designers and installation engineers clear parameters, simplifying the selection of compatible pumps and reducing ambiguity.

Applications

EN 735:1995 is widely used in industries where rotodynamic pumps play a key role, such as:

• Water and Wastewater Treatment
  Guarantees dimensional compatibility for pumps installed in treatment plants, promoting efficient operation and easy replacement.

• Industrial Process Engineering
  Pump manufacturers and end-users rely on the standardized dimensions to streamline equipment selection and system design, saving time and reducing costs.

• Building Services (HVAC and Plumbing)
  Ensures that pumps used in heating, ventilation, and air conditioning systems fit within the specified tolerances, making retrofitting and maintenance more convenient.

• Maintenance and Spare Parts Management
  Allows maintenance teams to source pumps and spare parts with confidence, knowing that parts conforming to EN 735:1995 will fit existing setups properly.

Related Standards

For comprehensive pump system standardization and design, also consider the following related standards:

• ISO 5199: Rotodynamic pumps - Performance requirements
  Focuses on performance and testing requirements for rotodynamic pumps.
• ISO 9906: Rotodynamic pumps - Hydraulic performance acceptance tests
  Provides guidance on pump performance test methods.
• EN ISO 15783: Seal-less rotodynamic pumps
  Specifies requirements specific to seal-less pumps, complementing overall dimensional standards.
• EN 22858: End suction centrifugal pumps - Designation, nominal duty point and dimensions
  Details designation and dimensional parameters for end suction pumps.

By aligning with EN 735:1995 and related standards, organizations benefit from enhanced interoperability, streamlined installations, and improved international product acceptance. Following standardized dimensions and tolerances leads to higher efficiency, lower production costs, and a safer, more reliable operation for centrifugal pump systems.

Keywords: EN 735, rotodynamic pumps, centrifugal pumps, pump tolerances, European Standard, overall dimensions, pump compatibility, pump manufacturing, ISO standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2000
Overall dimensions of rotodynamic pumps - Tolerances
Overall dimensions of rotodynamic pumps - Tolerances
Anschlußmaße für Kreiselpumpen - Toleranzen
Dimensions d'encombrement des pompes rotodynamiques - Tolérances
Ta slovenski standard je istoveten z: EN 735:1995
ICS:
23.080 ýUSDONH Pumps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SI
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