Presentation on

Taps & Valves Used in Cold Water Systems

PLUMBING

Quarter turn ceramic disc pillar tap

Cold water – Taps and Valves

Screwdown bibtap

Automatic closing device

washer

Supatap designof bibcock

fixed disc

‘O’ ring

washer

backnutPillar tap

circlip

non-risingspindle

Cold water – Taps and Valves

‘O’ ringwasher crutch

headrising spindle packing gland

nutheadgear

jumper body

washer

Packing gland

wedge shaped gatenon-rising spindle

wheel headseating

Fullway gatevalve

‘O’ rings

valve open

valve closed

Cold water – Taps and Valves

StoptapDrain off tap

Service valve

Quarter turn head

Cold water – Taps and Valves

Hot Supply Cold Supply

Bi Flow OutletBi Flow Outlet

Sections

This type of tap is suitable for unbalanced pressure between the hot and cold water 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

Cold SupplyHot Supply

Mixed Outlet

Outlet in

section

Cold water – Taps and Valves

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