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Pressure-compensating
diaphragm
DN 25 and DN 50
DN 150 valve seat – Ø 150
Valve rod
Lever
O ring
Pressure-compensating
diaphragm
O ring
O ring
Pressure-compensating
diaphragm
DN 80 and DN 100
O ring
Pressure-compensating
diaphragm
O ring
2. Specific maintenance instructions
2.1 Pressure-compensating diaphragm
During assembly, observe the correct mounting position of the valve.
2.2 Valve stem
In order to secure the diaphragm against unintentional movements when loosening and/or tightening the nut, secure the valve
stem accordingly. The valve stem has a transverse bore for that purpose.
372.20 p.04
DN 150 valve seat – Ø 100