Industrial valves - Cast iron plug valves

This standard specifies requirements for the valve seat and body pressure/ temperature ratings and the design, including materials, dimensions, operation, performance, testing and marking of lubricated, soft seated and lined cast iron plug valves. It also specifies anti-static requirements, and the option of a steel or cast iron plug. This standard is applicable to short, regular or venturi pattern valves.

Industriearmaturen - Kegelhähne aus Gußeisen

Diese Norm legt Anforderungen fest bezüglich der Druck/Temperatur-Zuordnungen des Ventilsitzes und des Gehäuses, sowie der Ausführung, einschließlich Werkstoffe, Maße, Betätigung, Funktion, Prüfung und Kennzeichnung, von schmierbaren, weichdichtenden und ausgekleideten Kegelhähnen mit einem Gehäuse aus Gußeisen. Sie legt ferner Anforderungen an die antistatische Ausführung fest, sowie die Wahlmöglichkeit zwischen Küken aus Stahl oder Gußeisen. Diese Norm gilt für Hähne in kurzer, regulärer oder Venturi-Form.

Robinetterie industrielle - Robinets à tournant en fonte

La présente norme spécifie les exigences concernant les relations pression et température du corps et du siège des appareils de robinetterie et la conception, y compris les matériaux, dimensions, fonctionnement, performances, essais et marquage des robinets à tournant lubrifié en fonte à siège souple et à chemisage. Elle spécifie aussi les exigences antistatiques, et l'option d'un tournant acier ou fonte. La présente norme est applicable aux robinets à tournant de série courts, ordinaires ou à venturi.

Industrial valves - Cast iron plug valves

General Information

Status
Not Published
Technical Committee
CEN/TC 69 - Industrial valves
Drafting Committee
CEN/TC 69/WG 5 - Plug and ball valves
Current Stage
4598 - Decision to abandon - Finalization for Vote
Start Date
23-Jan-2001
Completion Date
14-Apr-2025
Directive
97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
Mandate
M/071 - Mandate to CEN for standardization in the field of Pressure equipment
Ref Project
OSIST prEN 12335:2004 - Industrial valves - Cast iron plug valves

Overview

prEN 12335 - Industrial valves: Cast iron plug valves is a CEN pre-standard that defines essential requirements for cast iron plug valves used in industrial piping. The standard covers design, materials, dimensions, operation, performance, testing and marking for lubricated, soft-seated and lined cast iron plug valves, and it sets requirements for valve seat and body pressure/temperature ratings. It also includes anti‑static requirements and permits either a steel or cast iron plug. The standard applies to short, regular and venturi pattern plug valves.

Key topics and technical requirements

  • Scope and applicability
    • Valve types: short, regular and venturi pattern cast iron plug valves
    • Seat constructions: lubricated, soft-seated and lined designs
  • Design and materials
    • Material selection for body, plug and seating components (cast iron body, optional steel plug)
    • Dimensional requirements for interchangeability and mounting
  • Pressure/temperature ratings
    • Requirements for establishing safe body and seat ratings under specified service conditions
  • Operation and performance
    • Functional requirements for actuation, sealing performance and flow characteristics
  • Testing and marking
    • Performance and routine tests to verify leakage rates, mechanical integrity and pressure containment
    • Marking requirements for traceability (model, material, pressure/temperature designation)
  • Safety features
    • Anti-static requirements to prevent electrostatic build-up between plug and body
  • Options
    • Choice between steel or cast iron plug and different seat/lining configurations

Applications and who uses this standard

  • Manufacturers - to design and produce compliant cast iron plug valves with specified materials, dimensions and performance criteria.
  • Specifiers and engineers - to select the correct valve pattern (short/regular/venturi), seat type (lubricated, soft-seated, lined) and pressure/temperature class for process systems.
  • Procurement and quality assurance - to verify vendor documentation, testing records and marking for conformity.
  • Testing laboratories and inspectors - to perform the specified performance and pressure tests.
  • Maintenance teams and plant operators - to understand design limits, safe operation and replacement parts compatibility.

Related standards

  • Other CEN or ISO valve standards covering materials, testing methods and flange/connection dimensions.
  • Industry standards addressing valve testing, pressure-temperature ratings and anti-static design (refer to relevant CEN/ISO/API documents when specifying system compatibility).

Keywords: prEN 12335, cast iron plug valves, industrial valves, pressure-temperature ratings, lubricated plug valve, soft-seated valve, lined plug valve, anti-static requirement, venturi pattern.

Frequently Asked Questions

prEN 12335 is a draft published by the European Committee for Standardization (CEN). Its full title is "Industrial valves - Cast iron plug valves". This standard covers: This standard specifies requirements for the valve seat and body pressure/ temperature ratings and the design, including materials, dimensions, operation, performance, testing and marking of lubricated, soft seated and lined cast iron plug valves. It also specifies anti-static requirements, and the option of a steel or cast iron plug. This standard is applicable to short, regular or venturi pattern valves.

This standard specifies requirements for the valve seat and body pressure/ temperature ratings and the design, including materials, dimensions, operation, performance, testing and marking of lubricated, soft seated and lined cast iron plug valves. It also specifies anti-static requirements, and the option of a steel or cast iron plug. This standard is applicable to short, regular or venturi pattern valves.

prEN 12335 is associated with the following European legislation: EU Directives/Regulations: 97/23/EC; Standardization Mandates: M/071. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

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Standards Content (Sample)


SLOVENSKI OSIST prEN 12335:2004

PREDSTANDARD
oktober 2004
Industrial valves - Cast iron plug valves
ICS 23.060.20 Referenčna številka
©  Standard je zal
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