- Standard contents
1. Design and size
ISO 17292 and API 608 specify the design and dimensional requirements for ball valves. However, the design requirements of ISO 17292 are more detailed and comprehensive. ISO 17292 requires that the material of the ball valve must comply with the standard, the size of the valve must comply with the requirements, and also take into account the installation and maintenance of the valve, etc. The design and dimensional requirements of API 608 are relatively simple and do not provide much detail.
2. Material
ISO17292 and API608 both stipulate the material requirements of the ball valve. ISO17292 requires that the valve material comply with the standard It must be tested and inspected API608 material requirements are relatively loose, allowing the use of some of the materials that do not meet the standard.
3. Manufacturing
ISO 17292 and API608 both specify the manufacturing requirements for ball valves. ISO 17292 requires that valves must be manufactured by the standard, and must be subject to relevant inspections and tests API 608 manufacturing requirements are relatively simple and do not provide much detail.
4. Testing and Inspection
ISO17292 and API608 both provide for the testing and inspection requirements of ball valves. ISO17292 requires that the valve undergo a variety of tests, including dimensional inspection, sealing performance test, strength test, etc. API608 testing and inspection requirements are relatively simple and do not provide much detail.
- Test methods
1. Size check
ISO 17292 and API 608 both require that the size of the ball valve be checked. ISO 17292 specifies specific size-checking methods, including measuring the diameter, length, and width of the ball valve, etc. API 608 does not specify specific size-checking methods.
2. Sealing performance test
ISO17292 and API608 both require the sealing performance of ball valves to be tested. ISO17292 provides specific sealing performance test methods, including air leakage rate test, air tightness test, etc. API 608 does not provide specific sealing performance test methods.
3. Strength test
ISO 17292 and API 608 both require the strength test of ball valves. ISO 17292 specifies specific strength test methods, including pressure test, capacity test, etc. API 608 does not specify specific strength test methods.
- Scope of application
1. ISO 17292 applies to all kinds of fluid services, including liquids and gases. This standard applies to a variety of working conditions of the valve, including high-temperature, high-pressure, low-temperature, and low-pressure conditions.
2.API608 applies to a variety of fluid services, including liquids and gases. This standard applies to valves under general service conditions and does not apply to valves under high temperature, high pressure, low temperature, and low-pressure conditions.