Shut off main and pilot gas when pilot fails. Feature single-cycle energy cutoff (E.C.O.) and high-limit switch. Item: Gas Water Heater Control Gas Type: NG Pressure Regulation Main Burner: 4" WC Capacity (BtuH): 45,000 Pilot: Fixed Sensing Element: 5-1/2 Temp. Range (F): 60 to 160 Shank Length (In.): 1-3/8 Pressure Tap: Manifold Mounting: 3/4" NPT Inlet: 1/2" NPT Outlet: 1/2" Inverted Flare Standards: AGA, CSA (2755005)