valve element with a hanging wire to face a horizontal valve seat, providing a center pipe around the hanging wire and using two parallel spring wires to support a flange projecting from the upper part of the center pipe, so that the valve element drops at the occurrence of an earthquake. ...
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, ...
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
EARTHQUAKEEPROOF AUTOMATIC FIRE EXTINGUISHING DEVICE FOR GAS PURPOSE:To shut off gas supply surely when an earthquake occurs by a method wherein attraction of a magnet integral with a valve body to a fixed substance is released and the valve body is constituted so as to close a valve instantan...
摘要：PURPOSE:To prevent malfunction of an automatic gas shutoff device by such a construction that a permanent magnet to magnetize a valve in the shutoff device slides freely along a valve guide pipe and the permanent magnet is in linkage with the earthquake sensing part. CONSTITUTION:A weight...
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...
Sealing material:NBR rubber;Operation temperature:-10~50℃;Pressure max:100kpa;Turn on:Manual;Driving Voltage:DC 9-12V;Close time:<1sec;Product name:Gas automatic shut off valve;Type:Kitchen Gas Shut-Off Valves;customized support:OEM;customized support:O
AUTOMATIC LIQUID SHUT-OFF VALVE AND GAS TRAP Each run was carried out by, first, setting the lowest pressure differential across the nozzle by the use of the water supply valve and the back pressure valve and, then, bringing the upstream water to a tem- perature of 259-6... RW Stott ...
PURPOSE:To prevent gas explosion when gas leakage occured by a method wherein a valve is automatically closed without producing any spark and an alarm device is rung. CONSTITUTION:When gas leakage occured, a sensor 25 detects gas, an electric current is flowed in a solenoid valve coil 17, re...