Valve Standard for Petrochemical Industry

Main API standards:

API SPEC 6A: Wellhead and Christmas tree equipment

API SPEC 6D: Pipeline and pipeline valves

API STD 6FA: Valve fire test

API STD 594: Check valves

API STD 598: Valve inspection and testing

API STD 599: Metal plug valves

API STD 600: Steel gate valves

API STD 602: Gate, ball and check valves up to DN100 (NPS 4)

API STD 603: Corrosion-resistant, bolted gate valves

API STD 607: Fire test of quarter-turn valves and valves with non-metallic seats

API STD 608: Metal ball valves

API STD 609: Butterfly valves

API RP 615: Valve selection guide

ASME Standard

The ASME standard mainly involves valve material selection, temperature and pressure relationships, standard dimensions and valve body marking regulations. For example, ASME B16.10 covers the face and end dimensions of valves, while ASME B16.34 covers the flange, thread, and welding ends of valves.

These standards together constitute a complete system for the design, manufacture and inspection of valves in the petrochemical industry.