The coupling asbestos-cement self-condensed the series (State standard specifications 53980)

For connection of asbestos-cement pressure head pipes serve f/c the couplings of the type (State standard specification 53980) with rubber rings (GOST 5228-89) pressurizing butt connection. Feature of such coupling consists in increase of density of diligence of a resident ring and the coupling at increase of working pressure of liquid.