DUOTEC Potterton 25 30 ECO & 25 30 ECO ELITE GAS VALVE 720301001 was 720514301
Platinum Combi 28 HE A (After Serial No. BNC0932 Issue 7) 47-075-32. Platinum Combi 28 HE A (Before Serial No. BNC0932 Issue 7) 47-075-32 BEFORE. Gold 28 HE Combi 47-590-06. Heatmax Combi 28 HE 47-393-28.