Hi all - can someone explain what the two black levers are in this picture? Are they for putting more pressure in the heating system? I have a Megaflow Eco Systemfit Unvented Cylinder.
The second one is on the right hand side (not the best picture). So when replacing a radiator I would need to use this to top up the pressure? What pressure should it be?
The second one is on the right hand side (not the best picture). So when replacing a radiator I would need to use this to top up the pressure? What pressure should it be?