I've chosen to use composite deck filler caps for both my port and starboard water tank fills. The standard color for H2O is blue. They weigh about 4 times less than stainless steel deck fills.
Here's a look at my starboard deck fill installation site. I'm using thick vinyl tubing along with 1 1/4 inch PVC pipe as fill line that goes down to the built in tanks in the hull.
Here's a look at my starboard deck fill installation site. I'm using thick vinyl tubing along with 1 1/4 inch PVC pipe as fill line that goes down to the built in tanks in the hull.