Recent content by damiandixon

Actually thinking about the question it's stupid... The bleed screw is not needed at all, I can just turn the valve handle. The question should have been: Can anyone recommend a 'pressure relief valve' manufacturer with a very good MTBF? Thanks Damian

I have found that the pressure relief value, on my solar HW, has a very slight weeping. I suspect that that there was some debry left in the system. Problem now is finding a replacement valve. The plumbers merchant I use does not have any with a bleed screw. Any ideas as to a make that has...

The boiler is a free standing boiler with quite a large water capacity. The solar controls provide the ability to use the excess heat. I will check with the system manufacture's to see how the system would protect the central heating components from temperatures exceeding 80 degrees...

Hi Agile, I saw your other post. This particular system is not meant to drain back when then temperature gets high. I see you point about the risk of over heating the rest of the system. The solar system is meant to shut down completly when the hot water reaches 90 degrees in the HW...

The cylinder is a twin coil. One coil for the solar panels. One coil for the HW heating from the boiler. The solar system is closed and contains anti-freeze so should not freeze. As an added precaution if the temperature does drop below freezing then the pump comes on to take some heat...

I have an oil fired boiler with two outlets one for central heating which is pumped. The other is gravity feed for the HW. The HW has a moterised valve. I want to add a pump to the gravity feed principally to use the HW circuit as a dump for excess heat generated by solar panels. This is...

I have a solar water system (closed) with a pressure gauge. The gauge keeps failing (replaced once under warentee). The gauge reading fluctuates with temperature quite widely now (0.2bar @ 8 degrees centigrade to +1 bar @ 38degrees centigrade and higher). I have attached a...