Presentation on Taps & Valves Used in Cold Water Systems PLUMBING Presentation on Taps & Valves Used in Cold Water Systems

Cold water – Taps and Valves Quarter turn ceramic disc pillar tap Screwdown bibtap Quarter turn ceramic disc pillar tap

Cold water – Taps and Valves ‘O’ ring washer backnut Pillar tap circlip non-rising spindle Automatic closing device washer Supatap design of bibcock fixed disc

Cold water – Taps and Valves ‘O’ ring washer crutch head rising spindle packing gland nut headgear jumper body washer Packing gland Drain off tap Stoptap wedge shaped gate non-rising spindle wheel head seating Quarter turn head valve open valve closed ‘O’ rings Service valve Fullway gatevalve

Cold water – Taps and Valves Bi Flow Outlet Sections Bi Flow Outlet Hot Supply Cold Supply This type of tap is suitable for unbalanced pressure between the hot and cold water supply.

Cold water – Taps and Valves Mixed Outlet Outlet in section Hot Supply Cold Supply A single check valve must be fitted to the cold water inlet if the supply is taken of the main. This type of mixing tap should only be used when BOTH supplies are at equal pressure

Used in Cold Water Systems Float Operated Valves Used in Cold Water Systems

Cold water – Storage cistern requirements – Installation of cistern Cistern control valves The water regulations require that a pipe supplying water to a storage cistern must be fitted with an effective adjustable shut off device. What device do you think they are referring to ? …. The device used on most domestic applications is called a float operated valve and we shall look at the various types now.

Cold water – Storage cistern requirements – Installation of cistern 9

Diaphragm Ball Valve

Equilibrium Ball Valve

Portsmouth Pattern Ball Valve