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Download as PDF; Printable version; ... Each AN size also uses its own standard thread size. AN fittings are a flare fitting, ... Pipe thread size 1 ⁄ 8-27: 1 ...
The half-angle (between the taper surface and the axis of the pipe) is arctan(1 ⁄ 32) ≈ 1.7899° ≈ 1° 47′. The standard for Nominal Pipe Size (often abbreviated NPS, which should not be confused with the abbreviation NPS for the straight thread form standard) is loosely related to the inside diameter of Schedule 40 series of sizes.
Examples of adapters include one end BSP threaded with the other NPT threaded, and one end threaded with the other a plain socket for brazing. A coupling whose ends use the same connection method but are of different sizes is called a reducing coupling or reducer. An example is a 3/4" NPT to 1/2" NPT coupling.
ASME B1.20.1-2013: Pipe Threads, General Purpose (Inch) Pipe Thread Form ANSI B1.20.3-1976 (R2013) Dryseal Pipe Threads (Inch) Pipe Thread Form ASME B1.20.7-1991 (R2013) Hose Coupling Screw Threads - Inch: Pipe Thread Form ASME B1.21M-1997 (R2013) Metric Screw Threads - MJ Profile: V Thread Form BS 84: Tables of BS Whitworth, BS Fine and BS ...
1" No thread Quick coupling 27 mm (G.59) EN 15202 27 mm 1.063" No thread Quick coupling 35 mm Jumbo (G.56) EN 15202 35 mm 1.378" No thread Quick coupling bayonet (G.61) EN 15202 No thread Quick Coupling Fork Lift (G.66) EN 15202 No thread Quick Coupling Fork Lift Bayonet (G.65) EN 15202 No thread SAEF 1/2" SAEF 12.7 mm 1.954 mm 1/2" 13 TPI
US Industrial 3/8" 8.2/8.5 A-A-59439, ISO 6150B 030 430 30 20/30 H US Industrial 3/8" HP 8 ISO 6150C 170.08 381 84 ARO 310 9 014.09 40 AA Scandinavian 9.5/10 9.5/10 032.10 408 32/1800 Eurostandard 10 10 027 410 27 Schrader 1/2" 017.10 TL US Industrial 1/2" 11 A-A-59439, ISO 6150B 037 550 37 20/30 G US Industrial 1/2" HP 11 ISO 6150C 170.11 471
British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external thread with an internal (female) thread.
The fitting is known as a reducing coupling, reducer, or adapter if their sizes differ. There are two types of collars: "regular" and "slip". A regular coupling has a small ridge or stops internally to prevent the over-insertion of a pipe and, thus, under-insertion of the other pipe segment (which would result in an unreliable connection).