EN ISO 23553-1:2022 PDF

Overview

EN ISO 23553-1:2022 - "Safety and control devices for oil burners and oil-burning appliances - Part 1: Automatic and semi-automatic valves" (ISO 23553-1:2022) is a CEN-endorsed international standard that specifies safety, constructional and performance requirements and type testing for automatic and semi-automatic oil valves. It applies to valves that are normally closed, interrupt oil flow in combustion plants, and are suitable for common oil types (middle distillates, heavy fuel oil, crude oil, kerosene - excluding gasoline). The document covers valves operated directly or indirectly (electrically, mechanically or hydraulically) and may include closed-position indicator switches. EN ISO 23553-1:2022 replaces the 2014 edition and is intended for type testing only.

Key Topics

The standard addresses the full lifecycle of valve design and verification with emphasis on safety and reliability. Main technical topics include:

• Construction requirements: appearance, holes, diaphragms/bellows, screwed fastenings, joints, moving parts, sealing caps and serviceability.
• Materials: requirements for metals, non-metallic seals, springs, corrosion resistance, impregnations and actuators.
• Oil connections: connection types, sizes, threads, union joints, flanges, compression fittings and welded connections.
• Performance and testing: type testing for leak-tightness, torsion and bending resistance, hydrostatic strength, rated oil flow and durability.
• Auxiliary features: strainers, position indicators and closed-position indicator switches.
• Test conditions and classification: classes/groups of control, DC-supplied control types and specific test arrangements.
• References to fuel classification (e.g., ISO‑8216‑99) and notes on additional test methods for atypical oils (e.g., emulsions).

Applications

EN ISO 23553-1:2022 is used to ensure safe oil supply shut-off in combustion plants. Typical users:

• Manufacturers of automatic and semi-automatic oil valves - for design, material selection and type testing.
• Testing laboratories and certification bodies - for performing and assessing required type tests and issuing conformity reports.
• Burner and appliance OEMs, system integrators and designers - to select compliant valves for oil burners and oil-burning appliances.
• Installers, maintenance engineers and safety assessors - to understand operational limits, durability expectations and compatibility with fuel types. Practical applications include procurement specifications, compliance documentation, type approval, and safety risk reduction in industrial and domestic combustion equipment.

Related Standards

• Supersedes EN ISO 23553-1:2014.
• Cross-referenced fuel classification: ISO 8216-99.
• Part of the ISO/CEN series on safety and control devices for oil burners (check national standards bodies for other parts and related standards).