Hayward AC004 Standard Output CO2 System<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Standard output CO2 system</li><li>Perfect for swimming pools， spas and water features with light to moderate demand for pH reduction</li><li>The pressure regulator and flow control are integrated into a single module for years of efficient， reliable service</li><li>Comes complete with solenoid valve， 30-feet installation tubing kit， integrated regulator， flow meter， power cord and PVC check valve injector</li><li>Simple to install and operate</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41YFwebhkgL.jpg" noproxy>