Series SS007 Stainless Steel Double Check Valve Assemblies provide protection to the potable water supply at non-health hazard cross-connections. Series SS007 is ideal in applications where the downstream liquid is of a composition where bronze material would be damaged or if it is desirable to eliminate trace elements of lead and copper. Typical low-hazard installations may be found in industrial or chemical plants, pulp and paper industries, hospitals, and corrosive atmospheres.