National Pipe Threads
This is a very common connection. NPT adapters are used in general plumbing,
hydraulics and numerous other applications. The thread has a taper of
1 degree and 47 minutes resulting in the tightening of the male into the
female port. The sealing (for pressure) surface is the threads. Stocked
in 316 Stainless Steel material.
There are two types of NPT connections, one an NPT, the other an NPTF.
The standard and most commonly used is NPT. It requires a sealing compound
such as teflon tape or pipe dope to help threads seal and also to reduce
friction while tightening. The other variation is NPTF also known as a
dry seal. It is built slightly different and is designed to seal without
any sealing compound although sealant can be used.
NPTs start at 1/16" and go very large, over many inches. We stock
up to 3". Be careful and not confuse the stated size with the actual
measurement of the threads. For example a 3" actually has a major
OD (outside dimension) of 3.5".
Connections to NPTs available at PressureLinks
We stock NPT to NPT, NPT to JIC, NPT to Medium Pressure, NPT to BSP, NPT
to High Pressure, and NPT to Type M.
For any non-standard, custom or standard fittings,
please call for quote.