ISO 4126-1 is the foundational part of the ISO 4126 series, an international standard that defines the general requirements for safety valves. These devices are designed to protect equipment and personnel by safely relieving excessive pressure from systems.

Key Features:

• Scope: Applies to spring-loaded safety valves
• Sizing principles: Covers parameters such as flow capacity, set pressure, and back pressure effects
• Tightness and accuracy: Specifies tolerances for opening and closing pressures
• Testing requirements: Includes functional tests, leakage tests, and performance verification
• Application areas: Widely used in chemical, petrochemical, energy, food, and pharmaceutical industries
  
  

Purpose and Benefits:

• Ensures safe and consistent operation of safety valves
• Provides international compatibility, enabling a common language across manufacturers and facilities
• Serves as a technical reference for designers, inspectors, and regulatory bodies