How To Install A One-Way Scupper ValveBy Dan Armitage
Published: Fall 2013
If you find your feet getting wet on your boat's self-bailing deck, something's amiss.
Here are the steps we took when installing one of two Flow-Max drains on a center-console boat:
1. First, remove the original scupper assembly. See tools needed (see above).
2. Fill the original screw-mounting holes with marine-grade sealant.
3. Fit the Flow-Max base-mounting plate over the scupper hole and use the screws supplied to secure to the transom. In most cases, such as this, the plate's holes will align perfectly with those that secured the original scupper-valve mounting plate so no drilling is required.
4. Secure the scupper bowl assembly to the base with a twist-and-lock motion.
5. Using the lock screws supplied, secure the bowl to the base. All that's needed to clean the bowl is removal of the screws and twisting the ball unit free of the mounting plate.
6. Installation is complete.
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