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To Oilman - I assume you mean expansion tank - no work on that,. Slippy what is PMSL please. Tks

Hopefully this works http://www.flickr.com/photos/24808122@N00/?saved=1

Not sure this is good but I found a great way of bleeding major air from system. 1) Turn off system and wait for pump overrun to cease. 2) Close both valves on rad 3) Open bleed valve and hold suitable receptacle under valve to collect water untill it stops flowing. 4) Once water stops open...

Tks John, The colour of the water is very, very pale yellow/orange, almost the colour of the inhibitor [Everad]. I don't thnik admin has posted the diagram of the system and I'm now not sure nhow I can get it on the forum, but the AAV is after the 3 port on the branch to the emersion flow...

Thanks SMJ, I have asked admin to post an image on this reply. Hope it is clear. I think I do have a combined feed and vent. Tks

Just spoke with Fernox. Their range of inhibitore is not compatible with Everad.

Thank you. I'll replace.

First of all thanks for previous advice given, by reading this and other posts I tihnk I am nearing the end of our problem. We have an air issue. Fully pumped system, Spurima 80 Boiler. Air collecting in bathroom rad , nearest pump. We have one very sluggish rad in a bedroom (may be an...

Has anyone used Everad Inhibitor - is it any good? Can inhibitors be mixed togther e.g.- Everad and Fernox? Tks

OK PVM - Happy Christmas to you too.

Chris - I believe our system is closed. So how will the AV work? Does the knurled plasic screw on top have to be loose? Does the hex nut on the side have to be adjusted. They are both screwed down hard? Tks as usual.

Probably a 'piece of string' or silly question, but how long would a system last if it was constantly 'breathing' in use?

Thanks Slippy I have also checked out www.Hepworth.co.uk which was quite useful. If it is not barrier and has to be changed can I leave until the winter is over before doing so i.e. would the air over the next say four months cause immediate corrosive damage to the system. Come to think of...

Don't have one of those. I do have a small brass, bottle shaped object 2" in height with a small plastic knurled screw on top and a plastic hex plug on the side.

Thanks Gary but I wanted to avoid yellow pages and such like. if anyone wants to call and discuss off-line please feel free 07850-519855. Huge apologies - just noticed previous wrong number

Thanks. How can I find out if it is barriered without asking previous plumber?

Ok - any Competent Registered Persons who would like a days work this side of Christmas in the Chislehurst area consisting of:- New Lighting circuit in kitchen - ceiling will be removed and cable in place, but not hooked up. Move cooker and hob outlet - I'll do the chasing/making good Convert...

Sorry to be a pain, but in a previous post you mentioned plastic pipe (Hep2o in this case) needing to be barriered. Would it be possible to explain what this is? Tks

I am little confused by the above. Don't get me wrong - not a pro spark, but need to do some work which is a bit of a jigsaw and will probably have to do it myself. On looking ont he forum have found it useful and did what Pedantic suggested and bought IEE Elecs Guide. Interesting book...

Thanks for the replies. Chemical inhibitor added recently after another drain down to re-route some pipes and cut out a dead leg. Thsi was done in the last three weeks. Ollski - not sure what you mean by 'barriered'. If it is something technical and involved a degree of work I am pretty...