Watts LFM115 300 E 30 300 PI 8 Part of the LFM115 Series R304 Detectable Warning Surfaces This 1 2 inch dual check This 1 2 inch dual check valve backflow preventer with intermediate atmospheric vent helps prevent the reverse flow of hot or cold polluted water from entering into the potable water supply 90 Minimum Temperature Fahrenheit 20 Outlet Connection Size 6 IN Outlet Connection Type Flanged Joint Outlet Thread Type Does Not Apply To Product Part Number 0823044 Plug Material Cast Iron Retainer Cover Material Ductile Iron Retainer Cover Type Tapped with Closure Plug Screen Material Stainless Steel Screen Size ONE_EIGHTH Series 77F DI 250 Strainer Type Wye WOG Rating 500 PSI Specification Sheet 77F DI 250 Specifications Adjustable Reduced Pressure Range 30 300 psi Adjustable Reduced Pressure Range BAR 2 Includes position indicator