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"The lockshield as you call it is a ( lockshield ) valve!" "is there a chance that the two lockshield valves" Yes, as I said in my comment, lockshield valves

Is there a chance that the two lockshield valves,ie, those on the return side of the radiators, have collected a small amount of debris or, were they fully opened when you carried out the flushing? They are, normally, only open a small amount and, if they have not been fully opened, when...

Yes, you do need to measure the thickness because, if the thickness, of the new units, is more, or less, than the originals, the new units cannot be easily fitted. The thickness is likely to be around, say, 28mm, ie, 2 x 4mm thick panes of glass, with a "spacer" 20mm thick. The spacer is...

I have three of these types of heaters and I find them invaluable. How they compare, ie, running costs, to fixed gas fires, I don't know but, you pay for your fuel up front so, no nasty surprises and, being flueless, none of the heat is wasted. It is prudent to have ventilation in any room...

An amateurs comment but, hopefully, worth considering. If the primary circuit has been bled, and no air remains in that circuit, then any further air in the circuit must have replaced some "lost" water. Is there a small leak anywhere, ie, behind the boiler which evaporates and then is not...

Any re-chargeable battery will do for these solar lamps. NMH instead of Nicad will give better results, ie, a full re-charge instead of just a top up. When you replace the batteries, make sure that any corrosion is scraped away from the battery housing terminals and, if you have a domestic...

I seem to remember that the model No and other details of the Myson which I used to have, were on the inside of the cover. Turn off the power, remove the two side screws and lift the cover off. There should be an identification label inside the cover.

Sorry, my previous comment overlooked that you had not bled the brakes to carry out the pad change so, piston seal damage is unlikely. In these circumstances, it is most likely that there is air in the system (did you allow the reservoir level to fall too far?) and that the brakes will have to...

Did you use a vacuum device to bleed the brakes or, did you pump the pedal and,possibly, "stroke" the master cylinder piston right to the bottom of it's bore? It is more common on older vehicles where the master cylinder lip seal gets torn on an unpolished, corroded, and previously unused...

As previously advised, these are drain covers and not vent covers. Yes, over time, the lip seal, on the outside of the window, will flex and allow moisture to drain into the cavity/slot which the window sits in and it is essential that this moisture can drain away so, if the pre-machined slots...

My only experience was in a holiday house which had one of these "real flame" effect hearths. The effect was excellent. It had a two speed fan giving 1 and 2 kilowatt outputs. The low speed, 1 KW setting was hardly audible and the 2KW was not obtrusive. However, it was mounted on a solid...

When I installed my conservatory, I found this Co quite helpful for replacement seals but, do a Google and you should come up with many more. See http://www.sealsdirect.co.uk/ I had some odd shaped D/G units made up locally and these were surprisingly inexpensive. Yes, in my opinion, have a...

Many thanks for the link

Thanks for the most interesting comments, ideas, plans etc. A lot to consider but, one last query. Is a valve, manual or solenoid operated, allowed in a primary circuit? I had always thought that this was considered dangerous practice. Again,any comment appreciated.

Thanks for the comment and advice. Yes, I could fit a solenoid operated two way valve and allow the pump to operate in the primary circuit but, what would be the advantages of a fully pumped system? I have quite long primary pipework anyway (from a Baxi back boiler) but, the gravity system...

"cast iron boiler with 28MM gravity primaries and no cylinder stat which you can't have anyway ," I have this type of installation and was intending to fit a cylinder stat, ie, via a 12/230 volt relay which would switch the boiler control. This control would, of course, only be used when the...

My view would be that a look on Ebay would be the answer. Many vehicles being broken for parts and, at the dealer cost which you have been quoted, the job could be done at a fraction of this seemingly exorbitant price.

For a conservatory, a portable Calor type gas heater can be quite economical when compared to "fixed" heater types and, when used carefully. You pay for your gas up front so no nasty surprises over bills, there is no flue, allowing heat to escape and ,most of these heaters have a wide range of...

A UPVC batten could be the answer. Your local window/facia Co will stock many UPVC profiles and a section could be screwed to the tiled wall and sealed with silicone. The mounting screws, for the shower screen, should be longer than normal and the batten drilled, right through, so that the...

Have a look at the current Ebay postings. There are a number of Baxi Bermuda boilers for sale, some very recent models. If you can find a good and competent engineer, who is able to do a boiler change, or a re-build of your existing boiler with donor parts, that might be the most economical way...