Dual Check with Atmospheric Port Designed for the Protection of the Water Supply from Carbon Dioxide Gas and Carbonated Water; These Substances Can Flow from Post-Mix Beverage Systems and are Very Acidic; If the Acidic Water Comes in Contact with Copper Tubing or Copper Pipe, It will Cause the Leaching of Copper Salts into the Water Supply; The Dissolved Copper If Ingested Can Cause Nausea, Abdominal Pain and in Some Cases Vomiting; The SD3 Prevents the Reverse Flow of Potentially Contaminated Water into the Potable Water Supply Due to Back Pressure Backflow and is Used for Continuous or Intermittent Pressure Conditions; The SD3 Atmospheric Vent Provides a Visual Indication of Failure in the Event that the Downstream Check Fails and System Backpressure Exceeds the Supply Pressure; ASSE 1022 Approved Dual Check with Atmospheric Vent; 316 Stainless Steel Body for Corrosion Resistance; All Rubber Compounds Comply with FDA Food Additive Regulations; Streamlined Body Design Minimizes Pressure Loss and Cavitation; Endurance Tested for More than 500,000 Pumping Cycle; Atmospheric Port Provides Visual Indication of Failure of the Second Check; Lead-Free
Dual Check Valve Backflow Preventer; Type Atmospheric Vent, Double Check Valve Assembly, Continuous Pressure; Nominal Size 3/8 Inch x 3/8 Inch; End Connection Female Threaded x Flared Threaded; End to End Distance 4-1/2 Inch; Body Material Stainless Steel; Disc/Poppet Material Santoprene; Seat Material Noryl; Temperature Rating 54 to 130 Deg F; Pressure Rating 150 PSI; Inclusions/Features Strainer; Exclusions Shut-Off Valve, Cap and Tether, Elbow Fitting, Hot and Harsh Water, Polymer Coating, Bypass, Hydrant Connection; Application Non-Health Hazard; Lead-Free; Protection Type Backpressure
This 3/8 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 atmospheric port that provides visual indication of failure of the second check and a Wye pattern strainer. It is ideal for use on post-mix carbonated beverage equipment and dispensing equipment for tea and coffee. The connections are female NPT inlet with SAE male flare outlet. Maximum working pressure is 150 psi (10 bar).
