Green Check Mark

The green check mark will help guide you in selecting the correct adapter to meet your tanks outlet valve needs.

Red X

The Red X will help prevent ordering the incorrect adapter for your tank.

NPT vs NPS - What Is The Difference

NPT = National Pipe Thread
NPS = National Pipe Straight

Both NPT and NPS have the same thread angle, shape, and pitch (threads per inch). However. NPT threads are tapered and NPS threads are straight (parallel). Tapered pipe thread is commonly found on ends of pipe, nipples and fittings (ie: couplings, elbows, tees, etc.) Tapered Threads typically require thread sealant or tape to complete the seal. Straight Pipe Threads need a gasket or O-ring to create a seal.

While NPT and NPS threads will engage, they do not seal properly with each other.

Still Need Help ?

If you are still not sure which adapter is right for your tank, fill out the contact form below and we will help you find the right product.

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