SIST EN 734:2000

Side channel pumps PN 40 - Nominal duty point, main dimensions, designation system

This European Standard specifies the designations, nominal duty point and main dimensions of heavy duty side channel pumps with a nominal pressure of 40 bar. NOTE: Depending on special circumstances e.g. temperature, materials, sealing ofthe shaft etc., excess operating pressure need not attain the value of the nominal pressure under any circumstances.

Seitenkanalpumpen PN 40 - Nennleistung, Hauptmaße, Bezeichnungssystem

Diese Norm legt die Bezeichnung, die Nennleistung und Hauptmaße für Seitenkanalpumpen für schwere Anforderungen mit Nenndruck PN 40 fest. ANMERKUNG: Bedingt durch besondere Gegebenheiten, z.B. Temperatur, Werkstoff, Wellendichtung, muß der zulässige Betriebsüberdruck nicht in jedem Fall den Nenndruck erreichen.

Pompes a canal latéral PN 40 - Point de fonctionnement nominal, dimensions principales, systeme de désignation

La présente norme européenne prescrit les désignations, les points nominaux de fonctionnement et les dimensions principales des pompes à canal latéral de service sévère, de pression nominale 40 bar. NOTE: Sous réserve de conditions particulières, et notamment température, matériaux, étanchéité de l'arbre etc., la pression relative de service admissible ne peut en aucun cas atteindre la pression nominale.

Side channel pumps PN 40 - Nominal duty point, main dimensions, designation system

General Information

• Status: Published
• Publication Date: 30-Nov-2000
• ICS: 23.080 - Pumps
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2000
• Due Date: 01-Dec-2000
• Completion Date: 01-Dec-2000
• Ref Project: EN 734:1995 - Side channel pumps PN 40 - Nominal duty point, main dimensions, designation system

Overview

SIST EN 734:2000 is a European standard issued by CEN that defines specifications for side channel pumps with a nominal pressure rating of 40 bar (PN 40). This standard addresses the designation system, nominal duty points, and main dimensions for heavy-duty side channel pumps. It serves as a critical reference for manufacturers, engineers, and maintenance professionals working with these pumps, ensuring consistency and compatibility across applications and markets. EN 734 supports quality management, safety, and interoperability in fluid pumping systems where robust performance under high pressure is essential.

Key Topics

• Nominal Duty Point
  Defines the operational parameters where the pump is designed to function optimally, including flow rate and pressure conditions typical for PN 40 side channel pumps.

• Main Dimensions
  Standardizes the physical measurements of side channel pumps such as casing size, inlet and outlet diameters, shaft dimensions, and mounting interfaces to facilitate interchangeability.

• Designation System
  Establishes a uniform coding system for identifying pump types, sizes, and performance characteristics, helping streamline procurement, documentation, and maintenance operations.

• Operating Pressure Considerations
  Clarifies that due to specific conditions-like temperature, sealing arrangements, or materials of construction-the actual permitted operating pressure may be lower than the nominal 40 bar under certain circumstances.

Applications

EN 734-compliant side channel pumps are widely used in demanding industrial environments requiring reliable handling of liquids at moderately high pressures. Typical applications include:

• Chemical Processing
  Handling aggressive or volatile fluids where precise pressure and flow control are essential.

• Water Treatment and Supply
  High-pressure pumping in filtration, circulation, and dosing systems.

• Petrochemical Industry
  Circulating heating oils, fuels, and lubricants under elevated pressure conditions.

• Power Generation
  Cooling and boiler feedwater services requiring robust and standardized pump designs.

• General Industry
  Heavy-duty applications involving liquid transport, where dependable performance and adherence to dimensions ensure compatibility with existing installations.

Related Standards

• EN 733 – Deals with centrifugal pumps specifications often used in conjunction with side channel pumps for broader application coverage.
• ISO 9906 – Hydraulic performance acceptance tests for rotodynamic pumps that may apply to verifying side channel pump efficiency and flow rates.
• EN ISO 5199 – Covers technical requirements for class II pumps including mechanical design aspects relevant to side channel pump manufacturing.
• API 610 – Industrial centrifugal pump standards providing guidelines for pumps used in process industries, complementary when selecting pumps for pressure-critical uses.

By adhering to SIST EN 734:2000 guidelines, industries can ensure side channel pumps are selected and maintained according to a recognized, rigorous framework that enhances equipment reliability, safety, and performance consistency. This standard plays a vital role in harmonizing pump design and operation across European markets and global supply chains.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2000
Side channel pumps PN 40 - Nominal duty point, main dimensions, designation
system
Side channel pumps PN 40 - Nominal duty point, main dimensions, designation system
Seitenkanalpumpen PN 40 - Nennleistung, Hauptmaße, Bezeichnungssystem
Pompes a canal latéral PN 40 - Point de fonctionnement nominal, dimensions
principales, systeme de désignation
Ta slovenski standard je istoveten z: EN 734:1995
ICS:
23.080 ýUSDONH Pumps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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