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4
4. Function description of TSV3B valve
Technical Data
Max. working temperature
95 °C
Max. working pressure
6 bar
Valve opening temperature
depending on the thermostatic element
Control range
t
valve,opening
+ 5 °C
Valve Kvs (A→AB direction)
6.2 m³/h.
Valve Kvs (B→AB direction)
4.4 m³/h
Connections
3x G 1" F
Nominal inner diameter
DN 25
Materials
Housing, cone and plug
brass
Spring
stainless steel
Element and plug seals
EPDM
Cone seal
NBR
Valve pressure drop graph
The pressure drop value
moves between the two cur-
ves depending on the mixing
ratio during mixing.
0,0
0,3
0,6
0,9
1,2
0,0
0,5
1,0
1,5
2,0
Δ
p [
m
H
2
O]
Q [m
3
/h]
▬▬
A
AB, Kvs = 6,2 m
3
/h
▬▬
B
AB, Kvs = 4,4 m
3
/h
B
AB
A
The TSV3B load valve is fitted with an integrated
thermostatic insert that will close the
A
inlet (from a heating
system), if the return water temperature to the boiler (
AB
outlet) is lower than the opening one. As soon as the
opening temperature is reached, the thermostat starts
opening the
A
inlet slowly and mixing the cold return water
with the hot water from the
B
inlet (boiler flow) with the
aim to reach the opening temperature (
AB
outlet) in the
return pipe.
At the same time, the valve closes the
B
inlet, limiting so
the hot water flow coming from the bypass till its complete
tight closure. Thanks to this, no balancing valve is needed.
The load valve is made of brass, element and plug seals
are in EPDM, cone seal is made of NBR.
