Can anyone recommend a good air pressure relief valve

Builder's Forum
1

I'm in the process of building a sit-on-top surf kayak.  I'm about
halfway done.  You can see the work-in-progress so far at this link:

http://smittypaddler.com/surfkayak/index.htm

Like the Kaholo, which I've built, it could be hollow, but I'm
worried about air pressure, and the relief valve on the Kaholo,
using a rubber stopper and a plastic tube, seems to me inadequate.
I found a lot of relief valves on the Internet, and I'm not at all
sure which would be best.  Has anyone put a better relief value on
the Kaholo? If so, please let me know what you'd recommend.

2

   I used a Goretex pressure relief valve, one at the bow and one at the stern. Has worked well since 2011. Don't remember the specific brand, but this is basically the same thing.

 

https://greenlightsurfsupply.com/collections/surfboard-and-sup-vents-plugs-and-handles/products/sup-goretex-vent?variant=1052041607