PROBLEM TO BE SOLVED: To provide an earthquake proof cutoff valve which has no restriction of mounting attitude, and besides, can certainly detect not only an earthquake signal but even the magnitude of an impact signal except for the earthquake signal, has high detecting accuracy and is ...
A shut-off valve mechanism for a shut-off and control valve has a generally cylindrical housing with inner and outer annular shoulder against which a valve seat disk is placed to prevent distortion of the valve seat disk. The valve contr... H Korfgen,H Hirsch,V Grendel,... 被引量: 20...
Why Should I Install an Earthquake Shut-Off Valve? In the event of a seismic earthquake of 5.1 or higher, yourseismic valvewill automatically close your gas line, even when you’re not home. A shut-off valve will save your home from fires and damages when resources are most strained durin...
A seismic event shut-off gas valve having a primary conduit arranged for orientation in a vertical position, and a secondary conduit intersecting the primary conduit at an intersection, with a plug member slidably secured in the secondary conduit in a first position and slidable to a second ...
Seismic gas shut-off valve with safety lock 专利名称：Seismic gas shut-off valve with safety lock 发明人：Ara K. Manoogian 申请号：US08/571356 申请日：19951213 公开号：US05620022A 公开日：19970415 专利内容由知识产权出版社提供 摘要：A seismic gas shut-off valve includes a lock to control ...
In a few cases the test can be static, such as applying a static lateral force to a valve operator to check the strength of the valve-operator-to-body connections. • Qualification by analysis, which is common to qualify distribution systems (piping, tubing, HVAC ducts, conduit, cable ...
United States Patent US5620022 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text
Seismic event shut-off gas valveMichael J Crain
A seismic gas shut-off valve includes a lock to control resetting after a seismic event. The valve includes internal first and second seats for a ball vale in which the first seat is elevated above the second seat and the second seat lies within the flow of gas from a supply line to a...
Date Jan. 19, 1984.A shut-off valve which has a body (20) containing a seat 22 and a through passageway. A plug (32) is attached to a stem (36) which is spring loaded in a retracted position disposed above the valve in a housing 46. A severable link (70) is connected to the ...