Brass reducing coupling

RTP reducing coupling is a nickel-plated brass fitting. It is designed for connection of steel pipes having different diameters in cold and hot water supply, and heating systems. The coupling has female thread. It facilitates transition from smaller diameter to larger diameter.

RTP Brass threaded connection fittings are used for detachable threaded connections on piping of cold potable, domestic and hot water supply systems, heating systems, compressed air systems, and on process piping transferring gases and liquids that are not aggressive to materials of connection fittings. Connection fittings can be used on pipelines of any material (steel, copper, brass, plastic, metal-polymer, polypropylene, etc.).

RTP Connections are made on cylindrical pipe thread as per GOST 6357 (ISO 228, EN 10226). Female cylindrical thread as per GOST 6357 may be connected with male conical thread as per GOST 6211 (ISO R7). Connection fittings are made of СW 617N hot-pressed brass to EN 12165 standard (corresponding to grade ЛС59-1 as per GOST 15527). Connection fittings have electroplated nickel coating.

Super-atmospheric pressure values for pressure-shaped brass piping fittings of RTP as per GOST 15527.

G Nominal pressure (PN), mPa
Maximum working pressure (MWP), mPa, at ambient temperature, °С
120 200 250
1/4” 4.0 4.0 3.2 2.7