NPT is a family of technical standards for screw threads to connect pipes and fittings.
About
NPT stands for National Pipe Thread and originates from the United States. It is considered to be the American alternative to the common BSP thread which is from Britain.
The thread has been adopted by the United States and some associated countries. NPT is largely used in New Zealand when imported turn-key systems, pumps or fittings have existing NPT threads. This has increased in recent years. Common applications for stainless steel NPT fittings in New Zealand include gas lines, chemical processing, pumping and machinery.
NPT threads are not compatible with BSP threads. This is because they have a steeper thread pitch angle of 60 degrees and the peaks and valleys are square. Whereas the BSP thread has a 55 degree thread pitch angle and rounded peaks and valleys.
Our NPT threaded fittings conform with Manufacturing Standard ASME B1.20.1 and are made from Stainless Steel Grade 316. This is marine grade meaning it can be exposed to salt water or harsh outdoor conditions. The standard Pressure Rating for NPT fittings is 150lbs or 10 bar.
One particular item in this range that is extremely useful is our NPT to BSP adapters. This allows NPT threads to be converted back to a more common thread type.
We stock NPT Elbows, Tee’s, Sockets, Nipples, Hex Plugs and Hex Bushes and NPT to BSP Adapters in different sizes from ⅛” – 4”.
About
NPT stands for National Pipe Thread and originates from the United States. It is considered to be the American alternative to the common BSP thread which is from Britain.
The thread has been adopted by the United States and some associated countries. NPT is largely used in New Zealand when imported turn-key systems, pumps or fittings have existing NPT threads. This has increased in recent years. Common applications for stainless steel NPT fittings in New Zealand include gas lines, chemical processing, pumping and machinery.
NPT threads are not compatible with BSP threads. This is because they have a steeper thread pitch angle of 60 degrees and the peaks and valleys are square. Whereas the BSP thread has a 55 degree thread pitch angle and rounded peaks and valleys.
Our NPT threaded fittings conform with Manufacturing Standard ASME B1.20.1 and are made from Stainless Steel Grade 316. This is marine grade meaning it can be exposed to salt water or harsh outdoor conditions. The standard Pressure Rating for NPT fittings is 150lbs or 10 bar.
One particular item in this range that is extremely useful is our NPT to BSP adapters. This allows NPT threads to be converted back to a more common thread type.
We stock NPT Elbows, Tee’s, Sockets, Nipples, Hex Plugs and Hex Bushes and NPT to BSP Adapters in different sizes from ⅛” – 4”.
Videos On NPT Threaded Fittings
Our Range Of NPT Threaded Fittings
NPT stand for National Pipe Thread. It's a family of technical standards for screw threads to connect pipes and fittings. NPT is considered to be the American alternative to the original BSP thread which is from Britain. Watch Rickie-lee discuss what NPT threads are.
RapidPress Press-Fit System vs Threaded Pipe Systems | RapidPress Rundown
Watch Patrick discuss on this episode of RapidPress Rundown the differences between the RapidPress Press-Fit System and threaded pipe systems.
What Is Special About Our Thread Sealing Tape? | Technical Tuesday
Thread sealing tape is commonly used in threaded piping applications to seal pipe threads and stop them seizing. Thread tape works as a filler, filling the space between the threads and creating a tight seal which helps to prevent leaks and seizing.
What Is the Difference Between BSP and NPT Threaded Fittings? | Technical Tuesday
In some sizes the threads per inch are very similar but the differences make the threads incompatible. Find out what the differences between BSP and NPT threads are, and how to identify between them via measurements and using the table on our website.