What is the difference between ISO 17292 and API 6D?
ISO Standard: ISO 17292 is a general international standard for ball valves, specifying design, material, and testing requirements for pressure ratings from PN10 to PN420. For example, ISO 17292:2015 explicitly requires that the body test pressure of low-pressure ball valves (PN10) reach 1.5 times the nominal pressure (i.e., 15 bar), while high-pressure ball valves (PN420) require 630 bar.
API Standard: API 6D is specifically for ball valves in oil and gas pipelines, covering pressure ratings from Class 150 to 2500. Its key features include fire-resistant design (30-minute fire resistance test) and full-bore construction (flow area ≥ 90% of the pipe cross-sectional area). API 608, on the other hand, is for flanged ball valves, emphasizing material toughness under cryogenic conditions (-46°C impact test).
1. Standard Nature and Scope
ISO 17292: A general standard developed by the International Organization for Standardization (ISO), applicable to steel ball valves in the petroleum, petrochemical, and refining industries, covering design, materials, manufacturing, and testing requirements.
API 6D: A specific standard developed by the American Petroleum Institute (API), applicable to valves in long-distance pipeline systems for oil and natural gas, such as ball valves, gate valves, and check valves, specifying detailed design, manufacturing, inspection, and testing requirements.
2. Core Content Differences
ISO 17292:
Design Specifications: Emphasizes versatility, applicable to various industrial scenarios.
Manufacturing Requirements: Provides clear requirements for the manufacturing processes and quality control of key components such as the valve body, valve cover, and valve stem.
Inspection and Testing: Specifies the inspection and testing requirements for valves to ensure their performance and safety.
API 6D:
Design Specifications: Emphasizes low torque, excellent sealing, low noise, and high safety and stability.
Manufacturing Requirements: Includes manufacturing processes and quality control for key components such as the valve body, valve cover, and valve stem.
Inspection and Testing: Specifies the inspection and testing requirements for valves to ensure their performance and safety.
3. Applications
ISO 17292: Applicable to the selection of steel ball valves in the petroleum, petrochemical, and refining industries.
API 6D: Primarily used for the selection of valves for long-distance pipelines such as oil and natural gas pipelines.
ISO 17292 and API 6D in stock
