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

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

3. 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

4. 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

5. 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.

6. 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

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

8. 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.

9. Cold water – Storage cistern requirements – Installation of cistern9

10. Diaphragm Ball Valve

11. Equilibrium Ball Valve

12. Portsmouth Pattern Ball Valve