my grandad has a "BAXI OIL 30 WARM AIR CENTRAL HEATING SYSTEM" and the oil control valve has packed up and i am unable to find a replacment. most of the writing has rubbed off the valve and i am unable to make out the manufacturers name i know it comes from ONTARIO CANADA and the flow rates are 18 HIGH FLOW & 3 LOW FLOW "1.7 CST" and "2B/E1005" are stamped on the cover plate apart from this i have little to go on PLEASE HELP ME