Check
O-ring
Sealing ring between sleeve and threaded cover. Check for cracks and deformation during maintenance — replace if anomalies are found.
Part number
4050.06 / 4065.06 / 4080.06 / 4100.06 / 4125.06 / 4150.06
2× installed in valve
Sealing ring between sleeve and threaded cover. Check for cracks and deformation during maintenance — replace if anomalies are found.