Standard

API STD 608

Publisert
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Omfang

This standard specifies the requirements for metal ball valves suitable for petroleum, petrochemical, and industrial applications—corresponding to the nominal pipe sizes in ASME B36.10—that have: — flanged ends in sizes DN 15 through DN 600 (NPS 1/2 through NPS 24); — butt-welding ends in sizes DN 15 through DN 600 (NPS 1/2 through NPS 24); — socket-welding ends in sizes DN 8 through DN 50 (NPS 1/4 through NPS 2); and — threaded ends in sizes DN 8 through DN 50 (NPS 1/4 through NPS 2). This standard applies to metal ball valves with pressure classes as follows: — flanged ends in Classes 150, 300, and 600; — flanged ends in Classes 900, 1500, and 2500 in sizes DN 15 through DN 50 (NPS 1/2 through NPS 2) only; — butt-welding ends in Classes 150, 300, and 600; — butt-welding ends in Classes 800, 900, 1500, and 2500 in sizes DN 15 through DN 50 (NPS 1/2 through NPS 2) only; — socket-welding ends and socket-welding by threaded ends in Classes 150, 300, 600, 800, 900, 1500, and 2500; — threaded ends in Classes 150, 300, 600, and 800. This standard establishes requirements for bore sizes described as: — full bore; — reduced bore. This standard applies to floating (seat-supported) ball and trunnion ball valve designs. These figures are to be used only for the purpose of establishing standard nomenclature for valve components; other floating and trunnion designs also exist. This standard establishes additional requirements for ball valves that are otherwise in full conformance to the requirements of ASME B16.34 (Standard Class). Trunnion ball valves equipped with double piston effect seats are outside of the scope of this standard. Users of this standard should refer to API RP 615 for background and further guidance and definitions on API 608 valves.

Dokumentinformasjon

  • Standard fra API_AC
  • Publisert:
  • Versjon: 0
  • Varetype: IS
  • Tilleggsinformasjon
    • SEVENTH EDITION; API MONOGRAM PROGRAM EFFECTIVE DATE: October 2, 2025