Translation of the original operating instructions
Type 327
© 1994 - 2022 SED Flow Control
54
BA220002 Version:
a
Vo
rl
ag
e
: d
o
k360 (
c)
Table 3: Tightening torques screws - cast body
Membran-
größe
diaphragm
size
Gewinde-
größe
thread
size
Anzahl
No. of
bolts
Guss
körper
cast
body
Gummiert
rubber
body
PTFE
EPDM
PTFE
EPDM
all
all
all
all
Nm
Nm
Nm
Nm
MA8
M4
4
-
-
-
-
MA10
M5
4
-
-
-
-
MA20
M6
4
-
-
-
-
MA25
M8
4
5-7
5-7
5-7
5-7
Table 4: Tightening torques screws - lined valve bodies
Membran-
größe
diaphragm
size
Gewinde-
größe
thread
size
Anzahl
No. of
bolts
Ausgekleidet PP,
PFA, PTFE
lined
body
PTFE
EPDM
all
all
Nm
Nm
MA8
M4
4
-
-
MA10
M5
4
-
-
MA20
M6
4
-
-
MA25
M8
4
5-7
5-7
→
Check the valve for function and tightness
Take care for simultaneous compression of the diaphragm
–
about 10%, depending on diaphragm
material and version. Especially PTFE-diaphragms have a setting behavior. Check the valve after
the first thermal load latest and re-tighten the bolts if necessary.