Recent content by skyflyer

well, events have overtaken things! Basically I thought that it would be simpler to replace the whole valve and be done with it, especially as the local merchant didn't have the powerhead alone and would have to order it in. Fortunately whoever installed the system fitted gate valves like...

thanks, but can you clarify: by 'spindle' I assume you mean the actual valve spindle that sticks out of the 'brassware', when you remove the powerhead, and not the spindle (cog) of the synchron motor? If the valve spindle wont turn byhand then I assume that means the valve itself is...

I have established that boiler wasn't firing up as no current from the microswitch in the motorized valve. I also notice that when the valve is opened manually, the microswitch isn't triggered; only when the valve is opened by the motor does it travel that little bit further to trigger the...