An Improved High Steam Pressure and Low Water Safety Valve for Steam Boilers.

摘要

22,164. Berry, W. E., and Hopkinson & Co., J. Oct. 2. Alarms, low water.-In a combined highpressure and low-water safety-valve of the concentric type the outlets OL from the low-water valve and OH from the high-pressure valve are arranged to discharge separately as shown. The outlet from the low-water valve may communicate with a steam-whistle.