MANUAL VR2025

VR 20/25
8
GB
Off regulator valve (AV20/25)
Application
The balancing valve is intend for
balancing heat or cooling systems.
It's used to adjust a certain waterflow/
pressure over the pipe system and can
also be used as an off regulator. NB!
Completely closed balancing valve is not
100 % secure from water leakages.
JVF balancing valve is provided with
an integrated waterflow instrument,
that continuously measures the actual
waterflow. By using the adjustment
screw, the waterflow can easily be
adjusted and measured without any
other measure instruments. It's possible
to read the actual waterflow even
when the valve is isolated. The actual
waterflow can easily be readed from any
angle though the measuringscale can be
rotated.
The fluid doesn't pass by the
integrated measure instrument
which eliminates the risk for any
contamination; continuously reading
can therefore take place long time after
the installation. There is also a socket
for measuring pressure with an external
instrument.
JVF balancing valve has an unchanged
waterflow profile inside. It's therefore
sufficient with a straight piece of tube
before the inlet that has the same
diameter and length as the valve itself.
Balancing valve (JVF20/25)
Technical specifications | AV20/25
Specifications | JVF20/25
Application
The off regulator valve is used to turn off
the water supply to the unit. It's either
open or closed and has no balancing
functions. It's therefore usually used for
maintenance and service purposes.
A
B
C
D
Dimensions [mm]
(D3498295 / D3498355)
(104507107 / 104510107)
Type Article no. RSK no. Weight [kg]
AV20
10017 672 75 94
0,3
AV25
10020 672 75 95
0,3
Type A B C D
AV20
130 57 32 70
AV25
140 62 42 85
Max. operating
temperature :
see Pressure/temperature
diagram
Min. operating
temperature :
- 20
o
C
(Using appropiate antifreeze compounds)
Max. operating pressure :
see Pressure drop diagram
Waterflow accuracy :
± 10 % on actual reading
Type DN Flowing area
[l/min]
1)
Cv
[m
3
/h]
Pressure drop
diagram
JVF20
20
4 - 36 3,5 2
JVF25
25
5 - 50 7,0 3
1) Applies for water and glycol additives with a temp. from +20
o
C
up to max. operating temperature.