Diaphragm Pressure Keeping Valve
Operating Instructions
TA 49
Rev.
13 en
05/2016
Technical modifications reserved!
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15
14
Changing the diaphragm
14.1 General
In case of maintenance- and repair work on the diaphragm
pressure keeping valve the safety- and warning notes in Chap-
ter 3 are to be observed.
Pay attention to all instructions concerning the handling of the
pumped medium when the diaphragm pressure keeping valve
is opened. Observe the EC safety data sheets!
CAUTION !
The diaphragm may only be replaced by authorized and
qualified personnel.
14.2 Changing the diaphragm
•
Unscrew the lid
•
Measure dimension “
T
” of the set screw with a caliper
gauge and document in Table 06
T
Upper edge
- Cover
- Set screw
Fig. 13 Setting
Type
Dimension "T“
(mm)
620.D
622.D
623.D
624.D
625.D
626.D
627.D
Table 06
•
Unscrew the set screw
•
Remove pressure spring(s)
•
Unscrew screws
•
Remove cover on the valve body
•
Diaphragm is now freely accessible and can be replaced
Lid
O-ring
Set screw
Cover
Pressure springs
Pressure disk
Diaphragm
Valve body
Flow direction
Fig. 14 Diaphragm replacement
