Honeywell intermittent pilot control conversion kit y8610u4001, 1/2″ x 1/2″ inlet/outlet gas valve features complete kits converting conventional standing pilot system to intermittent pilot system. For use with 24 vac gas-fired atmospheric furnaces, boiler and heating appliances y8610u kits are for use with natural or lp gas: provides 100 percent pilot gas shutoff if pilot fails to light; after 6-minute delay, trial for ignition is repeated ignition trail/delay sequence is repeated until the appliance lights or call for heat is removed