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