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Frank Annis Littlefield
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Individual
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Individual
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Publication of GB190814842ApublicationCriticalpatent/GB190814842A/en
14,842. Littlefield, F. A. July 13. Lift valves; packing, special methods of.-A lift valve forming part of a steam-trap has a diaphragm 30, secured at its outer edge between the upper edge 29 of the casing and a shoulder 28 on a screwed cap, and is clamped at the middle between the upper and lower sections 31, 32 of a valve stem, thereby preventing leakage. The diaphragm checks the movement of the steamtrap and valve in the extreme positions.
GB190814842D1908-07-131908-07-13Improvements in or relating to Automatic Steam Traps.
ExpiredGB190814842A
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