Mounting The Diaphragm; General Information - Gemü 620 Original Einbau- Und Montageanleitung

11.3 Mounting the diaphragm

11.3.1 General information

Important:
Mount the correct diaphragm
that suits the valve (suitable for
medium, medium concentration,
temperature and pressure). The
diaphragm is a wearing part. Check
the technical condition and function
of the valve before commissioning
and during the whole term of use.
Carry out checks regularly and
determine the check intervals in
accordance with the conditions of
use and / or the regulatory codes
and provisions applicable for this
application.
Important:
If the diaphragm is not screwed
into the adapter far enough, the
closing force is transmitted directly
onto the diaphragm pin and not
via the compressor. This will cause
damage and early failure of the
diaphragm and thus leakage of the
valve. If the diaphragm is screwed
in too far no perfect sealing at the
valve seat will be achieved. The
function of the valve is no longer
ensured.
Important:
Incorrectly mounted diaphragm
may cause valve leakage /
emission of medium. In this case
remove the diaphragm, check the
complete valve and diaphragm and
reassemble again proceeding as
described above.
Diaphragm sizes 25-50 (DN 15-50):
The compressor is loose.
Diaphragm sizes 65-150 (DN 65-150):
The compressor is fixed to the spindle.
Diaphragm sizes 25 - 50 (DN 15 - 50):
Compressor and actuator flange seen from
below:
Place the compressor loosely on the
actuator spindle, fit the grooves into the
guides (arrows).
Diaphragm sizes 65, 80 (DN 65, 80):
Compressor and actuator flange seen from
below:
Diaphragm sizes 100, 125 (DN 100, 125):
Compressor and actuator flange seen from
below:
31 / 40
620