Firefighting plumbing valve
<a href="//commons.wikimedia.org/wiki/User:%E5%A6%96%E7%B2%BE%E6%9B%B8%E5%A3%AB" title="User:妖精書士">User:妖精書士</a>
2008-12-24
<span class="int-own-work" lang="en">Own work</span>