GB328892A - - Google Patents

Abstract

328,892. Becker, A. C. Oct. 30, 1928, [Convention date]. Pressure -regulating valves.-In a gas pressure regulator having a breathing chamber located outside the gas stream, an additional diaphragm is provided in the said chamber and connected to a closing device or a regulating valve so as to operate said device or said valve only on the admission of gas under pressure to the chamber, and to remain ineffective during the normal breathing of said chamber. The breathing chamber o, Figs. 1 and 2, between diaphragms m, d is connected, preferably, to a separate chamber q which carries the additional diaphragm u,. said diaphragm being connected to the closing device s, t, as in Fig. 1, or to the valve plate f through the spindle f<1>, as in Fig. 2; in the latter case an additional diaphragm i<1> is provided to isolate the chamber q. The chamber v above the diaphragm u is connected to atmosphere through a port w, though when asembled it is inaccessible from the outside. The operation is as follows :- Gas flows from the inlet a through ports b, chambers c, i to the outlet and the gas pressure has access to the chamber h through the passage g. Should either of the diaphragms d, m break, gas pressure is admitted to the chamber q through the pipe p and closes the conical valve device s, t, to prevent escape of gas to the outside, or the valve f to shut off the supply. Normal breathing of the chamber o does not affect the device s, t or the regulator valve f.