Plumbing Encyclopaedia, 4th Edition

Roy Treloar has been involved with the mechanical service industry since leaving school in 1973. He became a full time lecturer, teaching plumbing in 1985. He is currently the curriculum development manager for the Professional Training Centre at Colchester Institute where he is responsible for various plumbing, heating, gas and electrical training and assessment programmes. He has played an active part in external verification for the City & Guilds in both the plumbing and gas schemes. He is also author to several books, including two highly successful textbooks, Plumbing, and Gas Installation Technology, both published by Wiley-Blackwell, as well as Teach Yourself Basic Plumbing and Central Heating (Hodder Arnold).