How to choose reliable threaded pipe fittings

Threaded fittings are those small but extremely important details that no pipeline can do without. Whether it's the water supply in a private house, heating in an apartment, or an industrial system in production, the tightness, safety, and durability of the entire system depend on the quality of the connections. In this article, we'll figure out how to choose reliable threaded fittings, what parameters to consider, and where to purchase them best. If you are looking for high—quality fasteners, I recommend that you look at the threaded fittings catalog, which contains proven fittings made of stainless steel and other materials.               

? What is a threaded fitting and why is it needed?

A threaded fitting is a connecting part that provides a collapsible pipe connection using a thread. Such connections are especially convenient where it is possible to dismantle, repair or replace equipment without disrupting the entire system. They are installed at the junctions of pipes, taps, meters, filters and other pipeline elements.

The main types of threaded fittings:

• Couplings (direct, transitional);

• Angles (90°, 45°);

• Tees;

• Stubs;

• Fittings and nipples;

• American women (with a cap nut).

, What to look for when choosing

To choose a truly reliable fitting, it is important to consider the following characteristics:

1. Manufacturing material

• Stainless steel (AISI 304/316) is ideal for drinking water, heating, aggressive environments, resistant to corrosion, and has been used for decades.

• Brass is suitable for household systems, but requires quality control of the alloy.

• Plastic (PP, PVC) is a budget option, for example, for cold water and ventilation.

2. Thread type and standard

There are different standards of carving:

• BSP(G) is a cylindrical pipe thread common in Europe and Ukraine.

• NPT is an American standard with a conical shape.

• Metric thread (M) is more common in machinery and pumps.

It is important to know that BSP and NPT are incompatible — do not confuse!

3. Diameter and type of connection

Choose a fitting according to the pipe diameter — from 1/4" to 2" or more. It is important that the inner section does not constrict the flow. Consider the type of connection — internal/external thread, cap nut, etc.

4. Manufacturing quality

Good fitting:

• It has a smooth, clean thread;

• It has no burrs;

• Done