What is the difference between BS1868 and API 6D?
BS1868 is a British design standard for cast or forged steel check valves for the petroleum, petrochemical, and allied industries. Its full name is "Steel check valves for the petroleum, petrochemical, and allied industries."
API 6D is a standard developed by the American Petroleum Institute (API) to regulate the design, manufacture, and testing requirements of valves to ensure their safe and reliable use in the oil and gas, chemical, and other industries.
1. Standard Nature and Scope
BS1868: British Standard, applicable only to flanged and weld-on steel check valves, primarily for the oil, petrochemical, and related industries.
API 6D: Global standard developed by the American Petroleum Institute (API), applicable to various pipeline valves such as ball valves, gate valves, check valves, and plug valves, widely used in long-distance oil and gas pipeline systems.
2. Core Content Differences
BS1868:
Design Specifications: Primarily focuses on the structure, dimensions, and material requirements of check valves.
Manufacturing Requirements: Provides clear requirements for the manufacturing processes and quality control of key components such as the valve body, bonnet, and 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
BS1868: Primarily used in the UK and European markets, applicable to check valve selection in the oil, petrochemical, and related industries.
API 6D: Used globally, it is the core standard for valves in long-distance pipelines for oil and natural gas.
API 6D valve and BS1868 Valve in stock
