You’re very close but think laterally……what’s the opposite of drain ?Only thing I can think of is that It's used to drain rads.
But you have said you have an unvented system so it cannot be for filling or adding inhibitor unless it attaches via some valve. It does look like a temporary get around and the answer must lie in that 1/4 BSP thread that is needed to attach something to something but only briefly while some operation is performed. It is also worth saying that unvented heating systems in the UK come under G3 of the building regs on the grounds of safety, think of what would happen if you heated 150 litres of water from say 5 to 55 degree's and there was no room to accomodate the expansion !For example, filling rads from a header tank in the loft.
An incorrect assumption Roy. The gizmo is not relevant to the current property.But you have said you have an unvented system so it cannot be for filling or adding inhibitor unless it attaches via some valve. It does look like a temporary get around and the answer must lie in that 1/4 BSP thread that is needed to attach something to something but only briefly while some operation is performed. It is also worth saying that unvented heating systems in the UK come under G3 of the building regs on the grounds of safety, think of what would happen if you heated 150 litres of water from say 5 to 55 degree's and there was no room to accomodate the expansion !
That's cheating, so maybe part of a cleg fly trap from your last property !!The gizmo is not relevant to the current property.
Doh! Of course!Is it part of the flux capacitor used to fix the temporal displacement of the left phalange?
Yes it doesDoes it screw into the bleed valve hole ?
Now that’s a mighty fine idea!Screw into top of radiator, apply bike pump or some such to displace the water with air, close the service valves, radiator off without mess for decorating ?
I like that idea a lot.Screw into top of radiator, apply bike pump or some such to displace the water with air, close the service valves, radiator off without mess for decorating ?