8 Servicing/Maintenance
33 of 48
KSB Delta Basic
1983.835/01-EN
8. Remove the insert check valve including O-rings.
9. Remove excessive contamination or deposits with a clean cloth.
10. Re-insert the insert check valve into the body. Apply lubricant to new O-rings.
See table below.
Fig.11: Mounting the body
11. Mount the body of the non-return valve.
Fig.12: Loosening the screwed connection of the body parts
12. Use a suitable tool to loosen the screwed connection of the body parts of the
non-return valve to extend the body length.
Fig.13: Verifying the alignment
13. Verify the correct alignment.
Fig.14: Fitting the screw