The gas earthquake shut-off valve is composed of a valve body, a shut-off device and a trigger device. The valve body is formed by connecting an upper section and a lower section, and the shut-off device and the trigger device are arranged in the valve body. The trigger device is ...
Earthquake shutoff valve 优质文献 相似文献 参考文献 引证文献Evaluation of Automatic Earthquake Shutoff Valve Performance and Recommendations for Future U.S. Standards Increasing interest of local and state government has developed in recent years regarding legislation requiring automatic shutoff valves for ...
Seismic Safety Products manufactures and sales the Northridge earthquake actuated natural gas and propane shutoff valve that prevents fires and explosions caused by leaking gas after an earthquake
Pacific Seismic California Valves are earthquake sensitive gas shut-off valves. They are intended to close in the event of an earthquake to prevent gas flow into a structure where earthquake damage may have occurred. The valve reduces the potential for f
A pressure control for a shut-off valve, preferably an earthquake sensitive shut-off valve, and a control for closing the valve in response to regulated pressure failure in the pressure supply of gas or the like thereto, and including a meter means or the like upstream, the control sensing ...
An earthquake actuated automatic gas shutoff valve having a valve bottom portion with a generally horizontal floor having a ball seat and a valve seat surrounding a gas outlet passageway. A ball having an elastomeric outer surface is held in the ball seat and in the event of an earthquake, ...
Earthquake safety valve for shutting off overflowing gas The present invention relates to a valve to shut off an overflowing gas passage and an earthquake safety valve for automatically shutting off a flow passage of LPG, LNG and a poisonous gas; and more particularly, to a valve capable of ...
Earthquake Valve Specialists protect your home with the installation of an automatic gas shut off device
The invention relates to an earthquake safety shutoff value. A valve body is connected with a valve port; a steel ball is arranged on a positioning grove of a left plate; a contactor on an alarm device is in point contact with the steel ball; an upper pin is used to connect the left...
Earthquake-responsive valve motor 优质文献 相似文献 参考文献 引证文献Earthquake relief valve A shock actuated shut-off valve is described, comprising: a valve, having an open position and a closed position, rotatably mounted within a valve body; a ... HE Diamond 被引量: 17发表: 1989年 Automa...