Fresh water draining connections

[Erny]

I have a 2011 Gulfstream Visa.
After a trip using the fresh water tank, we may park it for a few weeks before the next use. I want to drain off the fresh water so that i doesn't go off.
The drain points have screw-in plugs. I have to crawl under to remove them with a wrench, and I get soaked.
I want to replace the plugs with shut off valves. I thought standard garden hose types would work, but they are too large. Can someone tell me what size to look for?
Thanks. - Erny

[jeremyseattle]

Probably something like this (https://www.amazon.com/Camco-22243-Drain-Valve-Male/dp/B0006JLSN8/ref=asc_df_B0006JLSN8/?tag=hyprod-20&linkCode=df0&hvadid=309777433323&hvpos=&hvnetw=g&hvrand=7035891975020308623&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9057137&hvtargid=pla-450281363681&psc=1&tag=&ref=&adgrpid=63157419818&hvpone=&hvptwo=&hvadid=309777433323&hvpos=&hvnetw=g&hvrand=7035891975020308623&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9057137&hvtargid=pla-450281363681)

[Erny]

Thank you.