KSB Delta Basic MVP - Replacing the Non-Return Valve

8 Servicing/Maintenance
32 of 48
KSB Delta Basic
1983.835/01-EN
8.2.4 Replacing the non-return valve
DANGER
Voltage at the pressure booster system
Danger to life!
▷ Prior to opening the device, wait at least 10minutes for any residual voltage to
dissipate.
1. De-energise the pump set and secure it against unintentional start-up. Comply
with the local regulations.
2. Close the shut-off valve of the pump.
3. Place a suitable container under the drain connection.
4. Open the drain connections. To do so, observe the pump's operating manual.
Fig.8: Removing the screw
5. Remove the screw.
Fig.9: Screwing the valve's body parts into each other
6. Use a suitable tool to screw the body parts of the non-return valve into each
other to shorten the length of the body.
Fig.10: Removing the body
7. Remove the body of the non-return valve.