Valve Small 262×320 Medium 525×640 Large 839×1024 Download Tiff Original 1967×2400 | (936.3 KB) Description A concical valve. Keywords pipe, water Galleries Plumbing Source: William & Robert Chambers Encyclopaedia - A Dictionary of Universal Knowledge for the People (Philadelphia, PA: J. B. Lippincott & Co., 1881) Courtesy the private collection of Roy Winkelman
