API 600

API Standard 600, from the American Petroleum Institute, describes the criteria for valve design/construction and the material/trim designations for steel gate valves. The most recent version of this standard was published in January 2015, effective as of July 15, 2015.

Scope of API 600

API 600 covers bolted bonnet steel gate valves for the petroleum and natural gas industries, specifically where “corrosion, erosion, and other service conditions indicate a need for full port openings, heavy wall sections, and extra large stem diameters.”

Design specifications Of API 600

API 600 specifies design criteria related to the following:

• • Body wall thickness

• • Bonnet wall thickness

• • Body dimensions

    • • Flanged ends
    • • Butt-welding ends
    • • Body seats
    • • Openings

• • Bonnet dimensions

• • Bonnet-to-body joints

• • Gate

• • Yoke

• • Stem and stem nut

• • Packing and packing box

• • Bolting

• • Auxiliary connections

API 600 Gate Valve Manufacturer

ZECO Valves offers API 600 cast steel valves in ASME classes ranging from 150-1500. All cast steel valves are available in a range of sizes with flanged or butt weld ends.

API 6FA

API 607 applies to only the soft seated valves, but API 6FA applies to also metal seated valves.

API 6FA standard establishes acceptable levels for leakage through the test valve and external leakage after exposure to a fire for a 30-minute time period. The fire exposure test period has been established on the basis that it represents the maximum time required to extinguish most fires. Fires of greater duration are considered to be of a major magnitude, with consequences greater than those anticipated in this test.