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Flow Regulators
Selecting Flow Regulators
Supply System
Flow Regulator
Cold Supply
Hot Supply
Cold
Hot
Comments
0.1 to 1.0bar
0.1 to 1.0bar
No
No
Maximum pressure
loss ratio 5:1
1 to 5 bar
or pumped
1 to 5 bar or
pumped
Green
(7 litre)
Yellow
(5 litre)
♦
Use arrangement
for pumped system
Mains
1.0 – 10 bar
Gravity
0.1 to 0.5 bar
Green
(7 litre)
No
Gravity
Above 0.5 bar
Green
(7 litre)
Yellow
(5 litre)
Unvented Mains
/ Mains
Pressurised
Instantaneous
Water Gas
Heater
Green
(7 litre)
* Yellow
(5 litre)
**Instantaneous
Water Electric
Heater
Yellow
(5 litre)
No
Any vented
(open outlet)
Heater Gas /
Electric, e.g.
Electric Shower
Do not use with a mixer valve – This would be
extremely dangerous
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