EN ISO 3459:2022 PDF

Plastic piping systems - Mechanical joints between fittings and pressure pipes - Test method for leaktightness under negative pressure (ISO 3459:2022)

Title (English):

EN ISO 3459:2022

Plastic piping systems - Mechanical joints between fittings and pressure pipes - Test method for leaktightness under negative pressure (ISO 3459:2022)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 13
Publication date:: April 13, 2022
Edition:: CEN EN 3459 edition 2 version 1
ICS:: 23.040.60

Document language:

enru

Delivery time:1–7 days

Price:60 €

Description (English):

This document specifies two methods of testing for checking the leaktightness of assembled joints between mechanical fittings and plastic pressure pipes with diameters up to and including 63 mm. The test applies regardless of the design and material of the fitting used for jointing plastics pipe. This test method is not applicable to fusion-welded joints.

Technical details

Technical committee: CEN/TC 155 - Plastics piping systems and ducting systems
SKU: EN ISO 3459:2022

Abstract

Overview

EN ISO 3459:2022 - “Plastic piping systems - Mechanical joints between fittings and pressure pipes - Test method for leaktightness under negative pressure” - is a CEN-endorsed adoption of ISO 3459:2022. It specifies two laboratory test procedures for verifying the leaktightness of assembled mechanical joints (non‑fusion) between fittings and plastic pressure pipes with diameters up to and including 63 mm when the joint is subjected to external pressure or internal vacuum.

Key topics and technical requirements

Scope: Applies to mechanical joints regardless of fitting design or material; not applicable to fusion-welded joints. Supersedes EN ISO 3459:2015.
Two procedures
- Procedure A (pressure outside): Pipe interior open to atmosphere while an enclosed tank applies external hydraulic pressure to the joint.
- Procedure B (vacuum inside): A partial vacuum is drawn inside the pipe while atmospheric pressure acts externally.
Test parameters required by the referring standard (or Annex A if unspecified):
- Test medium, test pressure, duration, test temperature, free length.
Apparatus examples
- Procedure A: enclosed tank, hydraulic pump (pressure control ±0.05 bar), pressure gauge, temperature control (±2 °C), visual access.
- Procedure B: vacuum pump, vacuum gauge (accuracy ±0.01 bar), shut‑off valve, end‑seals and thermometers.
Specimen and preparation
- Test pieces consist of fitting(s) assembled with pipe segments; assembly per manufacturer’s instructions.
- Components shall not be tested until 24 h after production (shorter preconditioning allowed for practical reasons; 24 h in disputes).
- Pipe/fitting dimensions should ideally be near tolerance extremes to simulate worst‑case sealing conditions.
Procedure highlights
- Conditioning and temperature stabilization, drying the internal surface (Procedure A), staged pressure application with minimum hold times (typically 1 hour at each stage), and inspection for leakage.
- Test report requirements and measurable criteria for accepting leaktightness are defined in the standard.

Practical applications

Quality assurance and type testing of mechanical fittings and joint systems for water distribution, drainage, and other fluid transport where negative pressure or external loading could occur.
Verification of joint performance in product development, manufacturing QC, conformity assessment and third‑party certification.
Useful for manufacturers, test laboratories, standards bodies, product certification agencies, and installers specifying compliant components.

Who should use this standard

Manufacturers of plastic pipes and mechanical fittings
Independent test laboratories performing leaktightness testing
Certification bodies and compliance engineers
Design and installation professionals specifying components for systems exposed to vacuum or external pressure

Related standards / notes

EN ISO 3459:2022 was prepared by ISO/TC 138 and CEN/TC 155 and is intended to be referenced by other product or system standards specifying test parameter values. Always consult the referring standard for project‑specific test conditions.

Related standards

Mentioned in the description and other EN standards

Abstract

Overview

Key topics and technical requirements

Scope: Applies to mechanical joints regardless of fitting design or material; not applicable to fusion-welded joints. Supersedes EN ISO 3459:2015.
Two procedures
- Procedure A (pressure outside): Pipe interior open to atmosphere while an enclosed tank applies external hydraulic pressure to the joint.
- Procedure B (vacuum inside): A partial vacuum is drawn inside the pipe while atmospheric pressure acts externally.
Test parameters required by the referring standard (or Annex A if unspecified):
- Test medium, test pressure, duration, test temperature, free length.
Apparatus examples
- Procedure A: enclosed tank, hydraulic pump (pressure control ±0.05 bar), pressure gauge, temperature control (±2 °C), visual access.
- Procedure B: vacuum pump, vacuum gauge (accuracy ±0.01 bar), shut‑off valve, end‑seals and thermometers.
Specimen and preparation
- Test pieces consist of fitting(s) assembled with pipe segments; assembly per manufacturer’s instructions.
- Components shall not be tested until 24 h after production (shorter preconditioning allowed for practical reasons; 24 h in disputes).
- Pipe/fitting dimensions should ideally be near tolerance extremes to simulate worst‑case sealing conditions.
Procedure highlights
- Conditioning and temperature stabilization, drying the internal surface (Procedure A), staged pressure application with minimum hold times (typically 1 hour at each stage), and inspection for leakage.
- Test report requirements and measurable criteria for accepting leaktightness are defined in the standard.

Practical applications

Quality assurance and type testing of mechanical fittings and joint systems for water distribution, drainage, and other fluid transport where negative pressure or external loading could occur.
Verification of joint performance in product development, manufacturing QC, conformity assessment and third‑party certification.
Useful for manufacturers, test laboratories, standards bodies, product certification agencies, and installers specifying compliant components.

Who should use this standard

Manufacturers of plastic pipes and mechanical fittings
Independent test laboratories performing leaktightness testing
Certification bodies and compliance engineers
Design and installation professionals specifying components for systems exposed to vacuum or external pressure

Related standards / notes

EN ISO 3459:2022 was prepared by ISO/TC 138 and CEN/TC 155 and is intended to be referenced by other product or system standards specifying test parameter values. Always consult the referring standard for project‑specific test conditions.

EN ISO 3459:2022 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards / notes

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards / notes

Related standards

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