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Hi there - In the process of doing some work on the floors upstairs, I've noticed that there are two radiator loops - 3 rads on one and 4 on another. There's also a loop downstairs (with 22mm pipe feeding the D/S circuit). System is regular fully pumped open vent system. Should I join the two...

Hello everyone - can anyone name this: Bell shape with flat bottom, 22mm vent pipe from the top of the bell, 2 x 22mm flow and return pipes into the bottom of the (flat) bell. What's it called, and why have I got one? Many thanks, Jude

Hi folks, With the central heating on and hot water off and the pump (50) on speed 3, the system pumps over into the header tank - it's a steady trickle, rather than anything more violent. If I turn the pump down to 2, the overpumping stops, but the two rads at the end of the circuit stay luke...

Hi guys, first post here - so hi ! I've put a radiator into a cold part of a kitchen extension and because there was no easy way to extend the downstairs circuit (without chasing out concrete, drilling through a double brick exterior wall), I tee'd into the flow and return of the upstairs...