|40mm Plasson 90 Deg Tee 7040|
I suspect the tee piece in the Surya panels and I curse my naivete in thinking that using 40mm compression waste fittings would be a permanent solution. They were easier to fit and have been good for a year (since April 2012), but perhaps it was not robust enough for more than a year.
|There is visible staining where the|
wind has blown glycol onto the wall
The original tee-piece was damaged by the vacuum tube installers inflating the circuit pressure with a pump, and by my not having an extra expansion vessel to absorb this. There are now two additional red expansion vessels on the circuit. We had some very hot days a week or two ago, and that may have caused the waste fitting to leak.
I have to bite this bullet, get the scaffolding up, take off the ETFE fronts, and replace that Tee-piece.
There is a source of Plasson fittings in Nottingham. I cannot understand the disparity in prices, some places change only about 15 pounds, others about 35 pounds... I'm going to the local stockist, Wilson Hall, in Netherfield.