7018131 (Watts) | 6 Inch | 757/757DCDA First Check Repair Kit

This 6 IN First Check Repair Kit For Series 757 And 757DCDA Helps to Prevent The Backflow of Pollutants That Are Objectionable But Not Toxic, From Entering Into The Potable Water Supply. It Features a First Check Module, Check Module O-Ring And Red Silicone Disc Elastomer. It is Designed For Non-Health Hazard Applications. | Watts | 7018131