Hunter Sprinkler PGV101ASV PGV Series 1-Inch Anti-siphon Female NPT Valve with Flow Control<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Such features include a rugged diaphragm that provides a leak-proof seal</li><li>Heavy-duty PVC construction and glass-reinforced bonnet</li><li>The PGV-ASV also includes flow control， allowing precise adjustment</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41rWzIq1W6L.jpg" noproxy>