| 摘要 |
<p>An adjustable relief valve comprising a valve member and a valve seating one of which acts against the other under the pressure of a predetermined weight to close a valve port, and a removable weight which can be added to the predetermined weight to vary the closing pressure, said removable weight being of annular shape and being located by means of a bayonet type connection on a boss connected to the valve member or the valve seating.</p> |
