OC3 screw cap

This is an improved screw cap for the karcher OC3. Please read the fitment instructions carefully or you could damage your OC3. you will need a standard fish tank airline check valve to complete this build.

This mod has been specifically designed to be completely reversible in the event you want/need to revert back to the OEM cap.

Printed in ABS
0.2mm layer height
100% infill
2% increase all axis

Fitment instructions:

check both parts screw together smoothly, it should not be tight or binding (the tank thread part has a slight chauffeur on one end, this is to face into the cap).

glue/silicone the fish tank air check valve into the center of the cap, orientated so it allows air into the tank but not out. without it the cap would obviously leak, but if the cap were solid the tank would cavitate and cause possible damage or degraded performance of the pump.

DO NOT PRESS FIT THE TANK THREAD TO THE TANK, you will irreversibly damage the tank lip. hook one side of the