GB190404896A - Improvements in and relating to Pressure Regulating Valves. - Google Patents

Abstract

4896. Carlson, S. Feb. 27. Pressure-regulating valves; s af e t y-valves.- The valve is in tended for illuminating or heating apparatus where a liquid bydrocarbon is forced by compressed gas into a burner, but can be used for other purposes, e.g., in apparatus in which liquids are forced from one vessel into another by compressed gas. In a casing o is fitted e flexible diaphragm b beneath which are a spring-controlled valve a for the admission of compressed gas and an outlet pipe l for the exit of the gas which has. been reduced in pressure. In the diaphragm b is fitted a valve seat c with one or more apertures d and a spring-controlled valve e, movable by an eccentric f, is adapted to engage with the seat c. The diaphragm b is pressed down by a spring i. By turning the eccentric f, the valve seat c is forced downwards and opens the valve a. When the pressure rises beyond a determined limit, the diaphragm b is forced upwards and the spring g closes the valve a until the pressure is sufficiently reduced to allow the spring i to force the diaphragm down and re-open the valve a. When the pressure becomes too high for safety, the valve e is lifted and the gas escapes through the apertures d into the air.