Aqualon 11684 – Ceramic Ball – Replaces OMAX 200904
Aqualon Part Number: 11684
Replaces OMAX Part Number(s): 200904
Other References: None verified
Stock Status: In stock (Europe) – Estimated 2 week lead time. Ships from Melbourne, Australia.
Overview
The Aqualon 11684 – Ceramic Ball – Replaces OMAX 200904 is the ceramic check-ball used inside legacy OMAX and MAXIEM direct-drive pump check valve assemblies. It forms the primary sealing interface that opens and closes during each pump stroke to control inlet and outlet flow.
Purpose / Why It Matters
The ceramic ball must remain perfectly spherical and free of chips or wear to maintain proper sealing against the valve seat. Any surface damage can cause pressure loss, check-valve flutter, or inconsistent flow. Replacing a worn or damaged ball restores tight seating, stable pressure generation, and reliable valve operation.
Compatibility
This part replaces OMAX 200904 and is compatible only with assemblies and pump models that specify this OEM number.
Per verified OMAX family rules, it applies to legacy OMAX direct-drive and MAXIEM pumps.
No EnduroMAX compatibility is implied.
When to Replace / Service Indicators
Replace the ceramic ball when:
• The check valve leaks or fails pressure-hold tests
• The ball shows visible chipping, wear marks, or flat spots
• Pressure output fluctuates despite new seals and seats
• The pump is undergoing a full or partial check-valve rebuild
Common Uses
• Repairing inlet or outlet check valves
• Completing rebuilds that include new seats, retainers, and seals
• Restoring consistent pump performance after contamination or wear events
• Preventing backflow and pressure instability during cutting
Why Choose Aqualon
The Aqualon 11684 provides a verified match to the OMAX 200904 ceramic ball, ensuring correct sealing performance, long service life, and reliable check-valve function in legacy OMAX and MAXIEM direct-drive pump systems.






