Watts SD-3-FN 1/4 - Part of the SD-3 Series ADS made from two layers of

made from two layers of high-strength

2 EPDM Disc Elastomers

making it highly resistant to tears and punctures

Epoxy-coated cast-iron body with anchor flange and dual weepholes (primary + secondary) for enhanced drainage robustness

Watts SD-3-FN 1/4 - Part of the SD-3 Series ADS made from two layers ofThis 1 4 IN dual check valve backflow preventer with atmospheric port and strainer for carbonated beverage machines prevents the reverse flow of polluted water, such as carbon dioxide gas and carbonated water, from entering into the potable water supply due to backpressure backflow. It consists of stainless steel body construction with internal rubber components and is designed for continuous or intermittent pressure applications. It has an