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Friedrich Weinrich
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5873. Weinrich, F. March 16. Couplings with valves.-In inserting valves in piping, the valve c is screwed into a boss b, which is either cast in one with the trunk a, or cast with a flange e which is bolted to the trunk.
GB190805873D1908-03-161908-03-16Improved Means for Connecting Spray Valves to Pipes
ExpiredGB190805873A
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