Prier P-164D04 Quarter-Turn Frost Free Anti-Siphon Outdoor Hydrant， 4-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Heavy duty construction</li><li>Anti-siphon - vacuum breaker</li><li>1/2" MIP x 1/2" SWT</li><li>4-inch length</li><li>Connects in heated portion of structure to help prevent freezing</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31-BQMxc6aL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31YFxhagokL.jpg" noproxy>