8170112 REPLACEMENT OPERATOR, NAT GAS, 3.5" WC, 24VAC/12VDC;FOR 700 SERIES GAS VALVES EXCEPT BLEED GAS TYPES.;MODEL ER, MFG # 705-408, COLOR BLACK BLOCK;WITH GASKET AND SCREWS
8100299 REPLACEMENT OPERATOR, NAT GAS, 3.5" WC, MILLIVOLT;FOR 700 SERIES GAS VALVES EXCEPT BLEED GAS TYPES.;MODEL MVR, MFG # 705-502, COLOR GRAY OR RED BLOCK;WITH GASKET AND SCREWS;250 MV TO 750 MV