作者: Patrick F. Mommeja , Raymond A. Laignel
DOI:
关键词: Engineering 、 Duct (flow) 、 Mechanical engineering
摘要: The invention relates to cocks having a rotating valve and sliding seats. A cock according the comprises body equipped with fluid-passage ducts, valve, seats in each duct and, rear of seat, an annular space within which there slides piston is pushed towards seat by pressurized fluid, locked mechanically this position screws.