Watts LF757DCDA OSY GPM 6 Part of the LF757DCDA Series ZC100F 3NH Specifications Body Material Cast Iron Specifications Body Material Cast Iron Brand Watts EAN 098268012613 Hydronic Item Type Boiler Feeder Valve Inlet Connection Size 1 2 IN Inlet Connection Size Metric 15 MM Inlet Connection Type Female Threaded Lead Free NO Maximum Steam Pressure PSI 100 Maximum Water Pressure PSI 145 Outlet Connection Size 1 IN Outlet Connection Type Female Threaded Part Number 0268499 Series 142 Type Kit Specification Sheet 142 The rolls are available in heights ranging from 18” to 48” This 6 inch lead free testable double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic It is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water