Rotta Russian Fire hose coupling is a rigid interlocking end-piece on fire hose; it is used for connecting hose to hydrants or fire engine pumps and other hose appliances (nozzles, wyes, etc).

Fire hose coupling is a rigid interlocking end-piece on fire hose; it is used for connecting hose to hydrants or fire engine pumps and other hose appliances (nozzles, wyes, etc).

Hose couplings are installed on hoses both ends that can be connected to another hose to extend the distance or to a nozzle to increase the liquid injection pressure. And the couplings always have different types according to different countries'standards.