BS EN 1555-4:2025 - Polyethylene (PE) Valves for Gaseous Fuels

Introducing the BS EN 1555-4:2025, a comprehensive standard that sets the benchmark for the design, installation, and maintenance of polyethylene (PE) valves used in the supply of gaseous fuels. This standard is an essential resource for professionals in the gas supply industry, ensuring safety, reliability, and efficiency in the use of PE valves.

Key Features

• Standard Number: BS EN 1555-4:2025
• Pages: 30
• Release Date: October 9, 2025
• ISBN: 978 0 539 31208 9
• Status: Standard

Overview

The BS EN 1555-4:2025 standard is part of a series dedicated to plastics piping systems for the supply of gaseous fuels. This particular part focuses on polyethylene (PE) valves, which are crucial components in the infrastructure of gas distribution networks. The standard provides detailed specifications and guidelines to ensure that these valves meet the highest standards of quality and performance.

Why Choose Polyethylene (PE) Valves?

Polyethylene (PE) is a preferred material in the gas industry due to its excellent properties, including:

• Durability: PE valves are resistant to corrosion and chemical attack, ensuring a long service life.
• Flexibility: The material's flexibility allows for easy installation and adaptation to various pipeline configurations.
• Lightweight: PE valves are lighter than traditional metal valves, reducing transportation and handling costs.
• Cost-Effective: The longevity and low maintenance requirements of PE valves make them a cost-effective choice for gas supply systems.

Applications

The BS EN 1555-4:2025 standard is applicable to a wide range of settings, including:

• Urban and rural gas distribution networks
• Industrial gas supply systems
• Residential gas connections
• Commercial gas installations

Compliance and Safety

Compliance with the BS EN 1555-4:2025 standard ensures that PE valves used in gaseous fuel supply systems adhere to stringent safety and performance criteria. This standard helps mitigate risks associated with gas distribution, protecting both infrastructure and end-users.

Who Should Use This Standard?

This standard is indispensable for:

• Engineers and designers involved in the planning and construction of gas supply systems
• Manufacturers of polyethylene valves and related components
• Quality assurance professionals responsible for compliance and safety checks
• Regulatory bodies overseeing gas distribution safety standards

Conclusion

The BS EN 1555-4:2025 standard is a vital tool for ensuring the safe and efficient operation of gas supply systems using polyethylene valves. By adhering to this standard, industry professionals can guarantee the integrity and reliability of their gas distribution networks, ultimately safeguarding both infrastructure and consumers.

Invest in the BS EN 1555-4:2025 standard today to stay at the forefront of safety and innovation in the gas supply industry.

BS EN 1555-4:2025

This standard BS EN 1555-4:2025 Plastics piping systems for the supply of gaseous fuels. Polyethylene (PE) is classified in these ICS categories:

• 91.140.40 Gas supply systems
• 23.060.99 Other valves

This document specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels. It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to EN 1555 2 and EN 1555 3 respectively. Valves made from materials other than PE, designed for the supply of gaseous fuels conforming to the relevant standards can be used in PE piping systems according to EN 1555 (all parts), provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to EN 1555 3. It also specifies the test parameters for the test methods referred to in this document. In conjunction with EN 1555-1, EN 1555-2, EN 1555-3 and EN 1555-5, this document is applicable to PE pipes, fittings and valves, their joints and, joints with components of PE and other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar at a design reference temperature of 20 °C; NOTE 1 For the purpose of this document and the references to ISO 8233, MOP is considered to be nominal pressure. b) an operating temperature between −20 °C to 40 °C. For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in EN 1555 5. The EN 1555 series covers a range of MOPs and gives requirements concerning colours. It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. This document covers valve bodies designed for connection with pipes with a nominal outside diameter dn ≤ 400 mm. NOTE 2 Additional information related to the installation of PE 100-RC systems is given in EN 1555-1:2025, Annex A. NOTE 3 Additional information about the suitability of PE pipe systems for hydrogen and its admixtures is given in EN 1555-1:2025, Annex B.