http://www.screwfix.com/p/salamander-s-tank-flange-fitting-for-hot-water-cylinder-22mm/76906?cm_mmc=Google-_-Product%20Listing%20Ads-_-Sales%20Tracking-_-sales%20tracking%20url&gclid=CMD4u4f7y7MCFXDLtAod8l4ALA#
Is this the type of flange you mean?
Is there a reason why air is getting...
The biggest problem is that I i have a booster pump feeding mixer shower so when air gets trapped in the pump it shuts off completly.
Problem accured after I drained both central heating and hot water (including header tanks).
If i turn the hot tap on before the shower it coughs and...