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Check-All Valve manufactures check valves, stainless check valves, sanitary check valves, connector check valves and flange check valves. We specialize in precision-type check valves. We recognize that the customer is important and we will continue to serve each customer to the highest standards.
Our compact double door (with pressure to 1480 psig and temperatures to 600 degrees F) and silent check valves are just some of the products we distribute here at Spence Engineering. In addition, we carry wafer silent check valves, flange silent check valves, foot valves and much more.
A double check valve, sometimes called a double check assembly (DCA), is a device used to protect water supplies from contamination due to backflow. Double check valves consist of two spring check valves assembled in sequence, usually with a ball valve or gate valve at each end.
Double check valves are effective at preventing back pressure and siphonage. Common uses for double check valves include lawn irrigation, fire sprinkler systems, and municipal water supply lines.
