213,045. Sheppard, H. B. Jan. 20, 1923. Lubricant conveyed by fluid. - Lubricant is supplied to a pipe. conveying air or other fluid through a nozzle c provided with a non- return valve e which is adapted to be opened by the external pressure of the nozzle of a lubricant supply pump or device inserted in an orifice g leading to the valve. The nozzle is mounted in a ring b secured between the flanged ends a of two sections of piping, and the valve e is positioned in a gland f.