This International standard specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion@ erosion and other service conditions would indicate a need for full port openings@ heavy wall sections and large stem diameters. This International standard sets forth the requirements for the following gate valve features: ?? bolted bonnet@ ?? outside screw and yoke@ ?? rising stems@ ?? non-rising handwheels@ ?? single or double gate@ ?? wedge or parallel seating@ ?? metallic seating surfaces@ ?? flanged or butt-welding ends. It covers valves of the nominal pipe sizes NPS: ?? 1; 1 ?; 1 ?; 2; 2 ?; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24@ corresponding to nominal pipe sizes DN: ?? 25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600@ applies for pressure class designations: ?? 150; 300; 600; 900; 1500; 2500.
API STD 600-2009 history
2021API STD 600-2021 Steel Gate Valves—Flanged and Butt-welding Ends, Bolted Bonnets (FOURTEENTH EDITION; API Monogram Program Effective Date: November 2021)
2015API STD 600-2015 Steel Gate Valves - Flanged and Butt-welding Ends@ Bolted Bonnets (THIRTEENTH EDITION; Effective Date: July 2015)
2009API STD 600-2009 Steel Gate Valves-Flanged and Butt-welding Ends@ Bolted Bonnets (Twelfth Edition; Incorporates Errata 1 November 2009)
2001API STD 600-2001 Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries (Eleventh Edition; ISO 10434:2001 Adoption)
1997API STD 600-1997 Steel Gate Valves - Flanged and Butt-Welding Ends@ Bolted and Pressure Seal Bonnets (Tenth Edition; Errata -June 5@ 1998)