GB190304920A - Improvements in Float Valves. - Google Patents

Abstract

4920. Smurthwaite, J., and Fisher, W. March 3. Ball and float valves; casings; noise, preventing. -Ball and float valves for supply &c. cisterns, and adapted for both high and low pressure water services, are made with a hollow metallic body A, the upper portion B of which is provided with an inlet C, threaded externally for connection to the main supply pipe. A piston E, provided with a rubber, leather, &c. disc J, held in position by a screw cap K, operates in a vertical casing D cast with or connected to the portion B, the lower end of the piston carrying an eye or loop F, through which passes a cranked lever G pivoted at one end between lugs G<1> and carrying a ball or other float at its other end. The cap K is open at the top, so that, when the float rises, the disc J is forced against and closes the inlet passage L, but, when the lever is depressed, the valve opens and water flows into the chamber M, being conducted thence, by way of an outlet tube 0, through an oblong or elliptical passage N. A noiseless working of the device is ensured by immediately directing the water, as it leaves the passage N, on to the side of the cistern, and by making the area of the passage N greater than that of the passage L.