This book provides a single volume text for NVQ plumbing and gas installation students at levels 2 and 3. It tackles the subject, topic by topic, in double page speads of text and illustrations so that the reader can grasp essentials quickly and easily. The new edition has been updated to cover revised standards, new regulations and the latest health and safety legislation. It is based on the latest NVQ programme. It features, for the first time, a large number of photographs and all illustrations have been redrawn. For further information please go to www.blackwellpublishing.com/treloar