These fittings are made to tighter tolerances than other stainless steel pipe fittings. They are also known as instrumentation fittings.

Typically used with medium- to high-pressure stainless steel threaded pipe fittings.

Also known as ANSI flanges.

Typically used with thick-wall and high-pressure stainless steel unthreaded pipe fittings.

Also known as Code 61 SAE hydraulic flanges.

Typically used with extreme-pressure stainless steel unthreaded pipe fittings.

Use at pressures up to 4,300 psi.

Polished to at least a 15 Ra finish on the inside, these fittings have an ultra-smooth interior surface that helps prevent contamination. They are also known as ultra-high-purity fittings.

Commonly used in high-pressure welding applications, these nipples connect your tank to the inlet of a pressure regulator. One side has a threaded pipe end and the other side has a rounded end that sits inside a threaded nut to make a threaded connection.

Use these couplings at pressures up to 10,000 psi. The plug and socket thread together to form a stronger connection than other quick-disconnect couplings. They are compatible with High-Pressure Thread-Lock-shape plugs and sockets.