Wilkins 3/4"-UFX34F-705 Dual Check Valve-Ideal for use where Lead-Free valves are required. Designed for installation on potable water lines to protect against both back-siphon age and back pressure of polluted water into the potable water supply. The Model 705 shall provide protection where a potential health hazard does not exist. Applications include indoor and outdoor meter box install- lations as primary domestic water protection. Standard lay length allows for retrofit of existing dual checks. Lead-free body and checks ensure safe drinking water while providing maximum corrosion resistance.