What is the difference between API 609 and EN 593?
EN593 European Standard specifies minimum general requirements for butterfly valves having metallic bodies for use withall type of pipe end connections (e.g.wafer,lug,flange,butt welding) and used for isolating, regulating or control applications.
API 609 standard primarily aims to ensure the consistency and reliability of valve products in design, manufacturing, inspection, and testing. It is widely used in industries such as petroleum, chemical, and water treatment to ensure the efficient and safe operation of valve products in these harsh environments.
1. Standard Nature and Scope
API 609: Developed by the American Petroleum Institute (API), primarily applicable to butterfly valves in the oil and gas industries, covering wafer, lug, and double-flanged butterfly valves.
EN 593: Developed by the European Committee for Standardization (CEN), applicable to butterfly valves in the chemical, oil, gas, water treatment, and power industries, including rubber-lined, metal-sealed, and high-performance butterfly valves.
2. Core Content Differences
API 609:
Design Specification: Emphasizes industrial applications and is 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.
EN 593:
Design Specification: Specifically for butterfly valves, specifying their structural, dimensional, and material requirements.
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 the valve to ensure its performance and safety.
3. Application Scenarios
API 609: Applicable to butterfly valve selection in industries such as oil and gas.
EN593: Applicable to butterfly valve selection in industries such as chemical, oil and gas, water treatment, and power generation.
API 609 and EN593 Butterfly valve in stock
