Feature

National Pipe Thread Taper (NPT) thread characteristics will have slope or slope And the end of the thread will be smooth and flat. The sloped thread method will greatly reduce leakage in the pipe system. and is very popular Can be found in general industrial systems.

National Pipe Taper Fuel (NPTF), also known as Dryseal American National Standard Taper Pipe Thread, defined by ASME B1.20.3, is designed to provide a seal. that does not have much leakage No tape, Teflon, or other sealants required. NPTF threads have the same basic shape. But the heights of the shoots and roots are adjusted to accommodate the interference. Eliminate thread leak paths

• The angle between the taper and the center of the pipe is 1 47′ 24″ (1.7899).
• Cutting the roots and crest horizontally
• Angle 60 Thread
• Pitch is measured in threads per inch.

Note! Pipe dimensions do not refer to any physical dimensions. Outside diameter of pipe or fitting Must measure and compare with table to determine size. 3/4″ NPT pipe thread has outside diameter – OD – 1.050 inches.

Each size has a number of threads per inch – TPI or pitch. 3/4″ NPT pipe threads have 14 threads per inch. Both the TPI and OD of the thread are required to positively identify the thread size, as there is more than one size of the same TPI.

NPT threads are not interchangeable with NPS threads – National Pipe Straight.

NPT threads may look similar to ISO 7/1 threads, however, ISO and NPT threads should not be mixed. ISO threads have a taper angle of 55 compared to 60 for NPT. The NPT root and crest configuration also differs from ISO for ISO thread pitch. Usually measured in mm. (It may be expressed in inches.) The pitch will vary.