TH Marine FLOW-MAX™ Ball Scupper - Clear (Meets All ABYC Specs)

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TH Marine FLOW-MAX™ Ball Scupper - Clear (Meets All ABYC Specs)


Tired of scupper leakage?

Replace your old worn-out flapper scupper with our new Flow-Max™ positive sealing ball scupper. 

Larger exit hole allows 70% more water drainage than its nearest competitor.

Multiple mounting holes make retrofits quick and easy - no filling holes or re-drilling.

Neutral buoyancy ball insures ball won't float up and break seal.

Meets all ABYC standards.

New easy twist-off design makes cleaning debris a snap.

Simply twist counterclockwise to remove ball cavity, clean out and twist back on.

Stainless steel security pin provided for added safety.


  • Replaces worn out flapper scuppers
  • 70% more drainage than competitive models
  • Twist off for easy cleaning
  • Retrofits all hole patterns
  • Stainless steel lock screw for safety
  • Seal is slotted to fit over 1-1/4" motorwell tubes