What is the difference between straight and angled valves?
If your radiator has side valve connections it will require angled valves where conventional pipe work is used (in this scenario you will need to allow a further 150mm to the width of the radiator to accommodate the valves). If your radiator has underside valve connections it will require straight valves where the pipe work comes up from the floor; and angled valves where the pipe work comes out of the wall. All of our cast iron radiators have side valve connections (so need angled valves) and most of our towel rails have underside connections. If in doubt, please ask.
