Watts LF140X8 125 210 3 4 Part of the LF140 Series Egress System the grates will rust over the grates will rust over time forming a protective iron oxide patina that begins red orange and ages to a deep Specifications Body Material Ductile Iron Brand Watts Buy American Act Compliant NO Class Rating 125 or 150 Control Type Lever Handle CV Rating 600 GPM Disc Material Ductile Iron EAN 098268604030 Inlet Connection Size 4 IN Inlet Connection Type Lug Lead Free YES Maximum Operating Temperature Fahrenheit 248 Maximum Working Pressure PSI 200 Minimum Temperature Fahrenheit 33 Operating Torque Dry 644 in lbs Operating Torque Wet 390 in lbs Outlet Connection Size 4 IN Outlet Connection Type Lug Part Number 0525601 Seat Material EPDM Series BF 03 Silicone Free Yes Stem Shaft Material Stainless Steel Valve Style Lug Specification Sheet BF 03 M2 Temperature and pressure relief valve to protect the heater from excessive pressure and temperature Specification Sheet Flood Sensor for Relief Valve Discharge Line (Spanish)