Presentation on Taps & Valves Used in Cold Water Systems PLUMBING
PLUMBING Presentation on Taps & Valves Used in Cold Water Systems Cold water – Taps and Valves Screwdown bibtap Quarter turn ceramic disc pillar tap Cold water – Taps and Valves circlip Automatic closing device ‘O’ ring non-rising spindle washer Supatap design of bibcock washer Pillar tap backnut fixed disc Cold water – Taps and Valves washer ‘O’ ring crutch head packing gland nut rising spindle headgear Packing gland jumper body washer Drain off tap Stoptap wedge shaped gate non-rising spindle wheel head seating Fullway gatevalve Quarter turn head valve open ‘O’ rings valve closed Service valve 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 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 Diaphragm Ball Valve Equilibrium Ball Valve Portsmouth Pattern Ball Valve
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