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GLOSSARY OF TERMSA - Air Locks B - Balanced Flue D - Drain Cock E - Essex Flange F - Flushpipe G - Governor H - Heat Exchanger I - Index Circuit J - Jumper K - Kite Mark L - Lockshield Valve M - Magnetite N - Non Return Valve O - Offset P - Pumps Q - Quarter Turn Tap S - Soakaway T - Thermostatic Radiator Valve (TRV) U - Unvented System V - Vented System W - Warning Pipe X - X Factor Y - Yarn Z - Zone Valve |
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