scupper valve gone bad?

[rkilpa]

I have a 2011 Ebbtide 2200 deck boat with aft floor drains that I assumed emptied into the bilge. When a heavier friend than me and I were both sitting near the drain I noticed water began pooling in the corner. It wasn't a lot of water as I was able to soak it up with a towel, but it kept coming up as long as we were there. Sure enough when my friend moved forward the water stopped coming in. It wasn't until I rinsed down the deck at home that I noticed the water emptied out through the transom from what I just learned is a scupper valve.

These plastic valves are located way below the water line on both sides of my transom and I assume the drain on the deck dropped below the water line with our weight in the corner of the boat, which is how water was getting in the boat.

I have never had this problem until our combined weight caused it. Do I have a bad valve, or is there just no way to keep all water from coming in if the floor drain is also below the waterline when it is weighed down in the corner like it was?

I'm sure Ebbtide knew what they were doing when they designed the boat, but why wouldn't they put the scupper valves above the waterline? Mine are almost at the same level as the bilge drain plug.

If I need to replace the valve, is it as easy as removing the 4 screws and replacing a rubber flap? Do I need to worry about something coming loose on the inside of the transom if the screws are removed because there is no way for me to access something from the inside?

 

[Grub54891]

In my opinion, that type of valve don't seal totally to begin with. They do let the water out, but at rest they stay cracked open a tad. When backing up they do seal, and prevent water from washing back up.

 

[dingbat]

It’s the nature of the beast....

The rubber flappers get hard over time and need replaced but in a sense it’s a design flaw. It only happens when the deck is below water level.

If it bothers you install the ping pong ball type as people say it helps with the problem. I have personal experience as my deck is high enough that I don’t really have the problem

Simple remove and replace procedure. 4 screws on each side

Having said that, I’m not a fan of plastic thru hills below the water line. First thing I did when I bought the boat was to change everything over to stainless.