Operating Principle
The controlling element of the solar thermostatic
mixing valve is a temperature sensor that is fully
immersed in the mixed water outlet passage. As
it expands or contracts, the sensor continuously
establishes the correct proportion of hot and
cold water entering the valve. The flow is
regulated by a piston sliding in a cylinder
between
the
hot
and
cold water passages.
Even
when
there
are
pressure drops due to
the drawing off of hot or
cold water for other uses
or
variations
in
the
incoming
temperature,
the mixer automatically
regulates the water flow
to obtain the required
temperature.
Flow curves
Kv = 2.6
10
0.01
0.1
0.02
0.03
2
5
0.05
1
0.2
0.3
0.
5
20
50
∆
p
(psi)
G
(l/min)
(
gpm
)
10
2
3
5
2
0
0.01
0.1
0.02
0.03
0.05
1
0.2
0.3
0.
5
(psi)
(bar)
10
2
3
5
2
0
1
0
.5
10
2
5
2
0
0.001
0.01
0.002
0.003
0.005
0.1
0.02
0.03
0.05
1.0
0.2
0.3
0.5
Cv = 3.0
4
0.04
0.4
0.04
0.4
4
0.004
0.04
0.4
COLD
HOT
MIX
