SEISMICCSENSITIVE AUTOMATIC CLOSING VALVENAKADA IWAO
Design of an Automatic Shutoff Gas Valve in Case of an Earthquake Structural principle and performance of a new mechanical seismic gas valve,which does not need any kind of power,are introduced.The valve would be shutoff ... X Yang,H Liu,L Yang - 《Journal of Catastrophology》 被引量...
Earthquake Valve Specialists protect your home with the installation of an automatic gas shut off device
A flapper-type gas valve automatically closable by accelerations characteristic of earthquakes. The arm is held up in the valve open position by a magnet attracting a soft ferromagnetic armature. The armature can be displaced to release the flapper to close the valve, either by seismic ...
A retrofit valve shutoff device is provided that comprises a coupling key for coupling with an actuator of a shutoff valve on a fluid supply line, an inertial measurement unit for generating one or more signals in response to arrival of seismic waves, a motor for rotating the coupling key ...
A retrofit valve shutoff device is provided that comprises a coupling key for coupling with an actuator of a shutoff valve on a fluid supply line, an inertial measurement unit for generating one or more signals in response to arrival of seismic waves, a motor for rotating the coupling key ...
PURPOSE:To make a shut off vibration value or seismic intensity required for shut off operation to be adjustable by making it possible to replace a small ball which detects vibration or rolls when an automatic shut off valve is applied to detect a specific vibration and automatically shuts off ...
The inertia ball recess is formed so that when the inertia ball is in the valve member recess, vibrations or seismic shocks of a predetermined magnitude cause the inertia ball to move from the unactuated position to the actuated position. An engagement component inside the housing is provided ...
A safey shutoff valve for insertion into a gas line or other fluid line, that closes in response to an electrical input pulse or to a seismic disturbance. A pivoted flapper arm is held in the open position by a permanent magnet embedded in it. When the magnetic attractive force is ...
[Effect] closes automatically as soon valve and setting seismic intensity more earthquake occurs, it is possible to Bosaegi a fire accident caused by the earthquake can be reliably and completely automatic shut off the gas to accurately. And in particular the valve body 11 in sliding misalignment...