Industrial valve standards are used as guides and technical specifications for the design, production, testing and use of these equipments. Some of the most important international standards in this field include the following.
API 6D standard
This standard is dedicated to the design and construction of pipeline valves and includes different types of valves such as gate valves, ball valves, ball valves and butterfly valves. API 6D specifies the technical specifications for materials, design, tests and inspections necessary to ensure that manufactured valves are resistant to various pressures and environmental conditions and perform optimally.
API SPEC 6D Standard for valve design
API 591 Standard Quality Measurement
One of the standards used to measure the quality of industrial valves is API 591, which first started in America and then made its way to global industries.
Most of the industrial valves defined in the API 591 standard are They are used for oil and gas industries and will determine the quality level of these valves by using specific tests. The most important tests that are taken in the API 591 standard are stem tensile strength, sealing condition, body material and disc type.
API 598 Standard
This standard is related to pressure and leakage tests of valves. API 598 specifies leak test methods for various types of valves to ensure that there are no leaks under operating conditions. These tests include hydrostatic and air pressure tests. One of the most complete valve standards in various industries is API 598, which performs a variety of tests to check the health and quality of industrial valves. This standard is suitable for all types of valves with flexible or rigid seat and is also used in butterfly or one-way valves. Click on the link to buy all kinds of butterfly valve. The most important tests that are taken in the API 598 standard are:
- Shell test or body material
- Back seat test
- High and low pressure leakage test
- Seat test< br>- Blockage and re-discharge test at different pressures
API 600 standard
Among other types of valve standards, we can mention the API 600 series, which is classified into different types. For example, API 600 is mostly used for gate valves or gate valves and is used in refinery industries.
This standard deals with the design and manufacture of cast steel gate valves. API 600 provides technical specifications for materials, dimensions, design and tests necessary to ensure the quality and proper performance of these types of valves. In addition, API 602 is also applicable to one-way and plate valves and more. It is used for nominal diameters from DN 8 to DN 100. The API 608 standard also specifies requirements that are suitable for steel ball valves and the petroleum and petrochemical industries. These standards are related to corrosion and wear, and examine different parts of gate valves, which include:
- valve caps
- screw and connection closures
- stem and handwheel
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