Check Valve Elbow for Reverse Osmosis (RO) Filter Systems<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Replacement check valve elbow for reverse osmosis (RO) water filter systems</li><li>1/8" male NPT threads fits most standard membrane housings</li><li>1/4" quick connect allows you to easily connect to your current 1/4" poly tubing</li><li>Symptoms of faulty check valve could be storage tank not staying full or excess water down the drain line</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31YnQ1DwrWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31aQueIhZUL.jpg" noproxy>