Extension 3/4" - 40 mm

Product detailed description

Brass threaded extension 3/4" - 40 mm is the most commonly used connection for steel heating, for example under a boiler and other heating solutions.

A brass threaded extension fitting - extends an existing threaded connection by a precisely defined length. Brass is a long-proven, standard material for threaded water and heating pipework thanks to its corrosion resistance and reliable tightness when the joint is properly tightened.

Frequently asked questions

• How do I choose the correct fitting size? The thread size (e.g. 1/2", 3/4", 1") must exactly match the thread size on the pipe or fitting you are connecting to - designations such as FF (female-female), MF (male-female) and similar abbreviations in the name indicate the thread type on each side of the fitting.
• What do the abbreviations FF and MF mean? F (female thread) and M (male thread) indicate the thread type on the given side of the fitting - for example "FF" means female thread on both sides, "MF" means male thread on one side and female on the other.
• Is sealing material needed during installation? Yes, threaded joints are typically sealed with a sealing material (e.g. PTFE tape or hemp fibre with sealing paste) to ensure a perfectly tight joint - the thread alone, without sealant, will not seal reliably.
• Does the installation have to be done by a professional? A simple threaded connection can be handled by a competent do-it-yourselfer, but when working on an already functioning system (especially a gas or pressurised water/heating system) we recommend calling in a plumber, who can also check the tightness of the joint after installation.
• What material and pressure class does this fitting have? It is made of brass, suitable for standard water and heating installations - exact nominal pressure and temperature values (where stated for a specific product) can be found in the technical parameters above.