A Discharge Capacity: 200000 btuh , Inlet Connection: Male Threaded , Inlet Size: 3/4" , Inlet Thread Type: NPT , Inlet Type: Male Threaded , Max. Temp.: 210 Deg. F , Max. Working Pressure: 113 psi , Mfr. Series: LF100XL , Outlet Connection: Female Threaded , Outlet Size: 3/4" , Outlet Type: Female Threaded , Pressure Range: 75 to 150 psi , Relief Temperature: 210 Deg. F , Shank Length: 1 1/16" , Thermostat Material: Copper , Thermostat Probe Length: 3"