S.A.E. 45 DEGREE FLARE
Copper, brass, aluminum, plastic and welded steel hydraulic tubing that can be flared.
Depends on tubing used. Will stand burst pressure of standard tube – up to 5,000 P.S.I. with bundyweld (double flared) and 3,500 P.S.I. with copper tube depending on size.
-65 TO +250 Degree F AT MAXIMUM OPERATING PRESSUES.
Good vibration characteristics depending on tubing used.
Approved by Underwriters’ Laboratories No. AU-1344 for hazardous liquid, fuel equipment.
Meets specifications of the Society of Automotive Engineers (S.A.E.) Tube Fittings Standards. 1/8 inch thru 5/8 inch.
Low cost, availability, reusability. Available in long and short nut styles.
Fuel, oil, air, water lines, LP and natural gas lines, hazardous liquids or gaseous chemical not corrosive to tubing material and brass.
MALE PIPE THREAD
Male National Pipe Thread Taper (NPT) threads are referred to as MPT ('Male Pipe Thread'), MNPT, or NPT(M) for male (external) threads. An equivalent designation is MIP (Male iron pipe). NPT is a U.S. standard for tapered threads used on threaded pipes and fittings. In contrast to straight threads that are found on a bolt, a taper thread will pull tight and therefore make a fluid-tight seal. Threaded pipes can provide an effective seal for pipes transporting liquids, gases, steam, and hydraulic fluid. These threads are now used in materials other than steel and brass, including PTFE, PVC, nylon, bronze and cast iron.
The taper on NPT threads allows them to form a seal when torqued as the flanks of the threads compress against each other, as opposed to parallel/straight thread fittings or compression fittings in which the threads merely hold the pieces together and do not provide the seal. As the thread body is tapered (0.75 in/ft) a larger diameter keeps compressing into a smaller diameter and finally forms a seal (no clearance remains between the crests and roots of the threads because of the taper). This means that NPT fittings should be burr free and lubricated using a lubricating material like lubricating paste or tape. (The use of tape also helps to limit corrosion on the threads, which otherwise can make future disassembly nearly impossible.)