I have a failed KBB/E electronic fire check valve on a oil fired CH system. The distance from the boiler to the tank is about 30m. The cabling between the boiler sensor and the shut off valve was put in when the house was converted from a barn and i cant get a route for a capillary type shut off valve. Anyone know if there is another electronic/electric valve - the KBB/E was discontinued about 10 years ago !