GB-3
D
GB
F
NL
I
E
▷
We recommend installing a manual valve AKT 25
in the pipe leading to the safety relief valve
VSBV 25, so that the annual function check of
the safety shut-off valve JSAV can be carried out
without having to remove it.
▷
To prevent the VSBV from being unintentionally
shut off, we recommend removing the manual
valve lever after commissioning and attaching
it to the pipe.
_> 5DN
JSAV
VSBV
Connecting the impulse line
▷
Remove the plastic plug in the “impulse line” con-
nection and connect an Rp ¼ (¼ NPT) pipe. We
recommend a pipe diameter of 12 x 1.5 mm.
Install the impulse line and seal with an approved
sealing material.
▷
Ensure that there is sufficient tube length for the
impulse line.
0
Rp ¼ (¼ NPT)
Connecting the breather line
▷
Remove the plastic plug in the “breather line”
connection and connect an Rp ¼ (¼ NPT) pipe.
We recommend a pipe diameter of 12 x 1.5 mm.
Install the breather line and seal with approved
sealing material.
▷
Route the breather line to a safe area.
0
Rp ¼
(¼ NPT)
Tightness test
WARNING
– An additional tightness test must be carried
out on the JSAV at all joints which have been
opened for maintenance work or replacement
of spare parts.
▷
Ensure that the valve seat of the JSAV is open,
see page 5 (Resetting).
Block the pipeline at the inlet and outlet.
▷
Note max. test pressure.
JSAV inlet and outlet: max. 6 bar (87 psig),
impulse line: max. 750 mbar (10.9 psig).
Slowly apply test pressure.
0
p
do
p
d
N
2
= max. 7,5 bar (109 psig)
N
2
= max. 750 mbar
3
4