Size of Duckbill valves on my Sundancer 330

[Brian Romanchuk]

Are they a standard size or are there different and if so does anyone know what size I need.

My boat is currently wrapped for winter but I would love to have parts on hand when I get into the boat to change ASAP. It should be easy as I have both motors out now and want this completed before the motors go back in.

Thanks in advance !

 

[Skybolt]

There are 1-1/2" and 2" depending on which vacuum generator or pump you have. But without a picture of that or the year of the boat, I am going to say 1-1/2" DB's as those are the most common in the under 40's. I would also change the plunger as well. But if you have a pic or two we could be definitive.

Welcome!

 

[Brian Romanchuk]

Thank You the Sea Ray is a 1998 but unfortunately no pic's until it warms up a bit and we can get into the wrap to work when it is warmer.

Thanks

 

[Nater Potater]

'92 300DA has 1-1/2" valves, but, as @SKybolt mentioned, 2" could be had. My money's on 1-1/2".

 

[Lazy Daze]

Another "educated guess" for 1-1/2". But go look in your parts manual to see what size hose is used. Then you'll know for sure. You can download it from SR's site if you don't have the original.

 

[mrsrobinson]

Same, 1 - 1/2"

Assuming you have a zipper on the wrap pop in, take a look, take a pic.

 

[duffman04]

DOMETIC 385310076 Black 1-1/2" Duck Ball Valve Kit - Pair https://a.co/d/eNCZzJj

Here was mine that I replaced last year. My boat is is a little newer, but I agree with everyone else. Note, there are 2, not just one. One is in a fitting that doesn't look like it would have a duck fitting in there.