On 9 Jan 2006 09:20:03 GMT, wrote:

Wouldn't you be better off using single C or D cells? It's probably
what the valve heaters were originally designed for.

Depending on the age of the valves they are much more likely to be
designed to run off a single lead acid cell of 2v nominal.

For the OP visit www.cpc.co.uk and put "cyclon" in the search box.

--
Cheers
Dave. pam is missing e-mail