ISO 24649:2022/Amd 1:2023

Overview

ISO 24649:2022/Amd 1:2023 is an important international amendment to the standard covering agricultural irrigation equipment, specifically focusing on manually and hydraulically operated plastic valves. Developed by ISO/TC 23/SC 18, this amendment expands the original standard to include hydraulically operated valves, reflecting advancements in irrigation technology and addressing the needs of modern agricultural practices. The updated requirements ensure reliability, durability, and performance of plastic valves used in irrigation systems, contributing to efficient water management in agriculture.

Key Topics

• Scope Extension
  The amendment extends the scope to incorporate hydraulically operated plastic valves alongside manually operated ones, broadening the applicability of the standard within irrigation equipment.

• Endurance Testing Requirements
  Detailed procedures for endurance testing are specified to validate the long-term operational integrity of both manual and hydraulic valves. Testing includes:

  • Conducting a leakage test before endurance testing.
  • Opening the valve for 10 seconds with a flow velocity limit of 1.5 m/s.
  • Applying internal hydrostatic pressure equal to the manufacturer's nominal pressure (PN) for specified durations:
    • 5 seconds for valves up to 32 mm (1 1/4 in) diameter.
    • 10 seconds for valves larger than 32 mm diameter.
  • Performing 5,000 cycles of opening and closing with water at ambient temperature.
  • Ensuring no visually detectable leakage during and after testing.

• Reference to ISO 8659
  The amendment adds ISO 8659 (Thermoplastics valves - Fatigue strength - Test method) as a normative reference for fatigue strength testing, emphasizing the importance of durability for plastic valve components.

Applications

ISO 24649:2022/Amd 1:2023 is applicable to manufacturers, designers, and users of agricultural irrigation equipment that utilize manually or hydraulically operated plastic valves. Practical applications include:

• Irrigation System Design
  Ensuring valves meet international durability and performance standards guarantees system reliability and efficient water distribution in various agricultural settings.

• Quality Assurance and Compliance
  Manufacturers can apply the amendment’s testing protocols to verify conformity, reduce failures, and improve product lifecycle.

• Hydraulic Control in Irrigation
  The inclusion of hydraulically operated valves supports advanced automation and control strategies, enabling better water management and resource conservation.

• Water Resource Management
  Reliable valve operation supports sustainable irrigation practices and helps optimize water use in agriculture, a critical factor in drought-prone or resource-limited regions.

Related Standards

• ISO 8659: Thermoplastics valves - Fatigue strength - Test method
  Provides specific procedures for assessing valve fatigue strength, supporting the endurance testing requirements in ISO 24649.

• ISO 24648: Agricultural irrigation equipment - Plastic piping systems
  Covers plastic piping systems in irrigation, complementing valve standards for comprehensive system integrity.

• ISO/IEC Directives, Part 1 and Part 2
  Outline the editorial rules and procedures for developing and maintaining ISO standards, ensuring consistency and clarity.

This amendment ensures enhanced performance validation for plastic valves in agricultural irrigation, supporting sustainable water management and irrigation efficiency. It is essential for stakeholders in agricultural machinery and irrigation equipment manufacturing to integrate these updated requirements to stay compliant and improve product reliability.