All accessories are made in brass nickeled-plated with ring of crimping in rustproof steel. They have excellent characteristics and they don’t rust. It exists several kind of accessories: fittings, T, kink (simple or to reduce), collectors... and they can be divided on 2 families: accessories to screw, accessories to set.
Press Fittings	Screw Fittings	Couples	Manifolds
The adapter fittings is generally used when junction must be verified, changed or maintained (for example: valves, collector derivations…)