Hot Surface Ignitor Product Type Hot Surface Ignitor For Fuel Type LP Natural Gas Compatible with Brand Surface Ignitor Company Compatible with Series HVN NC4100 OEM Replacement Part Number NR005 NR005KX Includes (2) Porcelain Nuts Standards cULus For Use With Robertshaw HVN Series or an Eaton NC4100 Series Gas Valve Series 41-200 Application Gas Operated Diaphragm Valves