A pipe fitting adapter is a small connector piece. Its job is simple: it lets you join two pipes or fittings that don't match — different sizes, different thread types, or different connection styles. Without one, those two parts just won't fit together. Force them, and you risk a leak, a pressure drop, or a failed joint down the line.
At SS Flow Control, we manufacture these adapters in stainless steel, so they hold up in tough conditions — oil and gas lines, chemical plants, water treatment systems, power plants, and pharmaceutical facilities. Stainless steel resists rust and corrosion and keeps its strength at high temperatures, which is why it's the standard choice for critical piping.
Key facts
- Connects mismatched pipe sizes and thread types in one fitting
- Available as male-to-female, female-to-female, or male-to-male
- Standard sizes 1/8" to 4" (DN6 to DN100), custom sizes on request
- Every adapter is checked for thread fit and pressure rating before it ships
Adapter vs. Coupling — What's the Difference?
People often mix these two up. A coupling connects two pipes of the same size and the same thread type. An adapter connects pipes that are different — different size, different thread, or both. If your piping layout has mixed sizes or mismatched standards anywhere, an adapter is the part that makes it work.
Tell us your pipe size, working pressure, temperature, and the fluid running through the line, and our team will help you pick the right adapter for it — whether that's one piece for a repair or a bulk order for a new build.