Sensing of fire installation water valves being closed
作者： Anthony James Magee
DOI:
关键词: USable 、 Engineering 、 ALARM 、 Automotive engineering 、 Signal 、 Waste management 、 Sense (electronics)
摘要: An improved water supply valve (1) for a fire installation where is to be supplied through said in the event of fire, including sensor (11) external chamber which can magnetically sense gate (3) being closed and usable provide an alarm activating output signal therefrom such circumstances, being, use, connectable give indication response when closed.
lens.org 参考文章(9)
Bouton Bernard, Displacement transducer for the slidable valve element especially of a hydraulic plunger valve ,(1984)
G Wettre, Safety valve for oil filled cable ,(1971)
James S. Poff, Rising stem valve position indicator ,(1977)
Nelson Norman A, Tomlin Jerry B, Gate valve having gate position indicating means ,(1968)
Leonard J. Thompson, Stephen C. Gonyaw, John Richard Zahorsky, Apparatus for monitoring a valve ,(1981)
Nishimura Hiroaki, Ishihara Shinya, Mizuno Kiyohiko, Valve operation detecting device ,(1973)
Charles E Renshaw, Recording apparatus for valves and the like ,(1919)
Harry N Rider, Gate valve with monitor ,(1943)
Charles A Turner, Valve supervisory and signal unit ,(1927)