DSI Gas Valve SW Series Suburban Water Heaters - This gas valve for DSI, SW Series Suburban Water Heaters has a 3/8 inch NPT Inlet x 1/4 inch Loxit Outlet Fits Suburban SW Series Water Heater Models: SW6D and SW6DE (After Serial #953401118) and SW10D, SW10DE and SW10DEM (After Serial #95360102)