14
Approved flanges (cylinders)
The 22mm No Stop Essex and the other
approved top entry flanges with extension
pipes into the cylinder represent the best
known means of ensuring minimal aeration
of the hot supply water to the pump.
Please contact PumpWise on 0191 516 2002
for additional approved flanges.
Warix flange (fig 14)
A) The vent connection MUST
be from side in Warix flange.
B) The supply connection to the
pump MUST BE FROM THE TOP
of the Warix flange.
C) In systems where there are one
bathroom and an en-suite shower,
or two or more bathrooms, the cold
feed to the cylinder MUST be in
28mm pipework.
MAX
60˚C
A
B
C
Usable capacity
minimum 50 gallons
per bathroom
Never less than
1.2m for any
top entry flange
Warix flange
Unpumped
outlets
Water hammer protection
Water hammer most commonly occurs in systems where there are long pipe runs supplying
solenoid activated appliances e.g. washing machines or outlets with quick acting/turn
taps/valve(s). The harmful effect of water hammer shock waves can be cushioned by fitting
a pressure vessel unit, into the supply pipework as close as possible to the outlet from which
the shock waves are originating.
Washing machine
Pressure vessel
Figure 14: Approved flanges
Figure 15: Water hammer protection
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