American standard check valve standard size

    Check valves designed, manufactured, produced and tested according to American standards are called American standard check valves. So, what is the standard size of American standard check valves? What is the difference between it and the national standard check valve?

    The standard sizes of American standard check valves are currently more popular and are designed and produced in accordance with API and ASME standards. In fact, many American standard valve standards are universally used. The standard size of the American standard check valve is introduced as follows:

    Design standards: API 6D, ASME B16.34, API 594, BS 1868, GB/T 12235, GB/T 12236, JB/T 8937

    Structure length: ASME B16.10, API 6D, GB/T 12221

    Connection standards: ASME B16.5, ASME B16.47, ASME B16.25, GB/T 9113, JB/T 79, HG/T 20592

    Pressure test: API 598, API 6D, GB/T 13927, GB/T 26480

    Pressure and temperature rating: ASME B16.34, GB/T 12224

    The use of American standard globe valve in high pressure environment

    The main differences between American standard check valve and national standard check valve are introduced as follows:

    1. The unit of nominal diameter is different;

    2. The flange marks are different;

    3. The structure length is different;

    4. The inspection requirements are different.