| 摘要 |
<p>The valve has a body (1) comprising a gas internal circuit (9) provided between a gas input orifice (10) and a gas output orifice. A gas passage control unit is arranged on the internal circuit and comprises a movable isolating plug (2) cooperating with a clapper seat (3). The clapper seat has an annular ring (4) made of stainless steel having a melting point, of 900 degree Celsius, higher than that of a copper alloy forming the body of the valve. An independent claim is also included for a gas distribution line equipped with a valve.</p> |
