#SEALING GAS PIPE THREADS CODE#

The code addressed pipe thread sealants but never required them to be used. Brass fittings and their sealing In order to seal joints with brass fittings, it is necessary to choose the right sealing material that is compatible with the system fluid. A modification to Section 403.8.3 (Threaded Joint Sealing) of the 2021 International Fuel Gas Code states that the text was revised to require the use of thread joint sealants (aka, joint compounds, pipe dope, pipe tape). Gas fittings: construction and sealant GNALI BOCIA gas fittings are made from brass and every versatile Hydraulic fittings for multilayer pipe Hydraulic fittings to be screwed for the multilayer pipe have a special section of the company's catalogâ¨â¨ Pipe threads explained for piping systems in 5 easy steps. Here, the most complex part is to choose the right material based on the fluid to conduct. Includes information on tape sealing and parallel or taper pipe threads. Threaded pipe and fittings are considered male and female and most commonly contain NPT (National Pipe Tapered) threads. Lastly, a recently designed method is the anaerobic sealant, a fluid to be placed on the threaded brass fittings, which, once screwed, polymerises the fitting with the pipe, thereby ensuring the final seal. Almost all plumbing systems (such as a natural gas pipe, compressed air pipe or a shower head and beyond) will have a section where a threaded connection is required. Fill the threads, but avoid getting paste inside the pipe. Use a brush or your finger to coat the male threads only. Mix the pipe dope thoroughly to ensure that the paste and solvent are combined. There are three basic types of thread sealants for metal pipe pipe dope, PTFE (ex. He confirmed it was dead and said I can cut it off so we can lay carpets. We should however bear in mind that, especially at high temperatures, aging could result in leakages.Īnother method to ensure the tightness of threaded brass fittings is to use teflon tape, a material suiting high temperatures more, yet one which, like hemp, requires a certain deal of ability for its positioning, which must follow the correct side of the thread. Follow these simple steps: Clean the male and female threads of dirt and oil. Teflon tape, properly known as thread seal tape, is used in the plumbing industry to seal the threads at the end of a pipe. 1 Hi, I had transco out today to check an old gas pipe that was sticking out of the bedroom floor.

The tightness of threaded brass fittings occurs through a conical coupling on the thread, though we must bear in mind that the metal-on-metal coupling is not always enough to seal both liquids and gases.Īs hinted above, there are methods by now consolidated to seal these threaded brass fittings, the best-known one being natural hemp which, combined with green paste, ensures tightness.

Sealing gas pipe threads