4. Function description of a TSV3B valve
TSV3B TSV5B 6/4Mx5/4F 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 boiler
flow (
B
inlet) with the aim to reach the opening temperature
in the return pipe (
AB
outlet).
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.
Technical Data
Valve opening temperature
depending on the thermostatic element
Control range
t
valve,opening
+ 5 °C
Connections
2x G 1" F, 1x G 6/4“ union nut
Nominal inner diameter
DN 25
Materials
Housing, cone and plug
brass
Spring
stainless steel
Element and plug seal
EPDM
Cone seal
NBR
Valve Pressure Drop Graph
The valve pressure drop value
moves between the two
curves depending on the
mixing ratio during mixing.
0,0
0,5
1,0
1,5
2,0
2,5
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
