What is the relevance of whether a radiator has side or underside valve connections?
The location of the valve connection points: – will determine whether you need straight or angled valves; and – will determine the total width of wall space needed to accommodate your radiator once installed. Radiators with side valve connections (bottom opposite ends) need angled valves where conventional pipe work is used. Add around 150mm to the width of the radiator to give the total width needed to accommodate the radiator once installed. Many of our radiators (and all of our cast iron radiators) have side valve connections. Radiators with underside valve connections need straight valves – where the pipe work comes up from the floor; and angled valves – where the pipe work comes out of the wall. Radiators with underside valve connections are a good choice where only very narrow wall space is available. Most of our towel rails have underside connections.