Asme b16 20 standard pdf

Metallic and nonmetallic gaskets for pipe flanges asme. In 1982, american national standards committee b16 was reorganized as the american society of mechanical engineers asme b16 committee operating under procedures accredited. Inward buckling of spiral wound gaskets has been identified as a potential problem. Pressure class 900, nominal pipe sizes 24 and larger, pressure. Its purpose is to assure installation interchangeability for. One of the significant changes is the introduction of maximum permissible leakage rate. Table of dimensions and tolerances of spiral wound gaskets. These tables must be used in accordance with the asme standard. The next edition of this standard is scheduled for publication in 2022. Materials covered in this standard are as in ansi b16. This standard also provides dimensional requirements for flanged ends of valves conforming to mss sp80.

This standard covers materials, dimensions, tolerances, and markings for metal ringjoint gaskets, spiralwound metal gaskets, metaljacketed gaskets, and grooved metal gaskets with covering layers. American national standard for pipe threads ansi asme b1. Asme b30 safety standard cranes and related equipmentcableways. They should be addressed to the secretary, b16 standards committee, the american society of mechanical engineers, three park avenue, new york, ny 10016. These gaskets are dimensionally suitable for use with flanges described in reference flange standards asme b16. Thisrevision wasapprovedby theamerican nationalstandardsinstitute ondecember2, 2011. Short radius elbows and returns, which were previously included in asme b16. Pressuretemperature ratings are in accordance with ansi b16. Guide specification for copper and copper alloy building. Pn values and references to api 605 have been removed from the standard. Asme, approval by ansi was given on january 22, 1993, with the designation asme b16. Asmeb16202017metallic gaskets for pipe flangesthis standard covers materials, dimensions.

Pressure class 900, nominal pipe sizes 24 and larger, pressure class 1500 from nominal pipe sizes 12 and larger, pressure class 2500 from nominal pipe sizes 4 and larger and all ptfe filled gaskets. Following approval by the b16 standards committee and the asme supervisory board, this standard was approved as an american national standard by ansi on june 15, 2009. These gaskets are dimensionally suitable for use with flanges described in the referenced flange standards. The asme b16 standardization of valves flanges, fittings and gaskets committee, which operates under asme s board on pressure technology codes and standards is responsible for standards covering valves, flanges, pipe fittings, gaskets and valve actuators for use in pressure services.

The standard applies to valves operated in a temperature environment between 20f and. This standard covers types, sizes, materials, dimensions, tolerances, and markings for nonmetallic flat gaskets. The user is advised that a valve used under the jurisdiction of the asme boiler and pressure vessel code, asme code for pressure piping, or governmental regulations is subject to any. Suggestions for improvement of this standard are welcome. This marks a landmark introduction of an actual leakage performance criterion into asme b16. In 1920, the american engineering standards committee later the american standards associations asa organized sectional committee b16 to unify and further develop standards for pipe flanges and fittings and later for valves and gaskets. Following approval by b16 subcommittee g, the standards committee, and asme, ansi approved this american national standard. Asme b16 10 face to face dimensions upon request from industry and government, asme has been defining piping safety since 1922. Metallic gaskets for pipe flanges ringjoint, spiralwound.

Piping codes, valve standards and ball valve selection. This standard covers materials, dimensions, tolerances, and markings for metal ringjoint gaskets, spiralwound metal gaskets, and metal jacketed gaskets and filler material. Our company offers a wide range of flanges like pl, sw, bl, wn,so,lj, asme ansi b16. B16 standardization of valves, flanges, fittings, and gaskets. Thank you for visiting our website and your interest in our free products and services. It addresses gaskets that are dimensionally suitable for use with flanges described in reference flange standards asme b16. These flanges are highly durable, corrosion resistant and reliable. F bushing g plug h 6 18 10 6 7 10 35 6 8 14 11 6 10 14 41 16 3 6. Use the material reference in the table when determining pressuretemperature ratings of valves used in accordance with the asme standard.