The Apollo Model DC4A and DCLF4A Series Lead Free* & Non-Lead Free Double Check Valves prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are objectionable to the potable water supply, but non-health hazards. The top accessed modular check valve cartridges provide captured springs, replaceable seats and reversible silicone seat discs. This
made in America assembly features ball valve shutoffs with stainless steel handles and nuts as standard and carries the five-year Apollo factory warranty. Low Pressure Loss Captured Spring Cartridge Check Valves Compact, Yet Easy to Maintain Ball Valve Shut-offs w/ SS Handles & Nuts Standard Top Access for Fast Testing & Maintenance Threaded Testcock Protectors Corrosion Resistant No Special Tools Required 5 Year Warranty Chloramine-Resistant Elastomers Designed, Cast, Machined, Assembled and Tested in the USA