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Dual Check Valves for Carbonated Beverage Machines

Series SD-2 Dual Check Valves for Carbonated Beverage Machines prevent the reverse flow of contaminated water, such as carbon dioxide gas and carbonated water, from entering into the potable water supply due to backpressure backflow. It consists of a stainless steel body construction with internal rubber components and is designed for continuous or intermittent pressure applications. Series SD-2 is ideal for use on post-mix carbonated beverage equipment and dispensing equipment for tea and coffee and comes in a variety of models. Maximum Working Pressure: 200psi (13.8 bar).


  • Streamlined body design minimizes pressure loss and cavitation
  • Endurance and shock tested
  • Corrosion-resistant stainless steel
  • Wide variety of custom end connections are available

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific SD-2

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: