Metal Plug Valves – Flanged, Threaded and Welding Ends
standard by American Petroleum Institute, 08/01/2002

Standard on Imperfection Terminology
standard by American Petroleum Institute, 11/01/1996

Flaned and Welding-End Steel Wedge-Gate and Plug Valves for Refinery Use
standard by American Petroleum Institute, 01/01/1949

Steel Gate Valves – Flanged and Butt-welding Ends, Bolted Bonnets, Thirteenth Edition
standard by American Petroleum Institute, 01/01/2015

Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries – Modified National Adoption of ISO 10434:1998
standard by American Petroleum Institute, 10/01/2001

Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries, Ninth Edition
standard by American Petroleum Institute, 10/01/2009

Gate, Globe, and Check Valves for Sizes DN 100 (NPS 4) and Smaller for the Petroleum and Natural Gas Industries, Tenth Edition, Includes Errata (September 2016)
standard by American Petroleum Institute, 05/01/2015

Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries, Eighth Edition
standard by American Petroleum Institute, 01/01/2005

Corrosion-resistant, Bolted Bonnet Gate Valves-Flanged and Butt-welding Ends, Eighth Edition
standard by American Petroleum Institute, 02/01/2013

Corrosion-resistant, Bolted Bonnet Gate Valves-Flanged and Butt-welding Ends, Seventh Edition
standard by American Petroleum Institute, 07/01/2007