RV Water Hoses - 1/2 " or 5/8"?

[chop249]

Originally Posted by NMWildcat

I always buy two 5/8" fresh hoses. That way when I fill my fresh tank I have more flow than the smaller hoses. And I buy a 50' 5/8" hose for the black flush and draining the gray tank..... Quickly. 🙌

This is a reason to buy the 5/8" hose. You can fill your fresh water tank faster. OTHER than that it doesn't matter what size hose you have. I personally have a PRESSURE regulator attached inside my control panel door at all times. If your supply pressure is lower than what you have your regulator set at it isn't going to change anything 1 iota! BUT if your supply pressure is higher than it is set at it will save you from a catastrophic failure of your piping.

2 different components of water dynamics should NOT be that hard to understand.

[davel1971]

some must can't differentiate between pressure and volume. You could run an 1/8 inch hose to your RV and blow the plumbing apart if the pressure is to high, or you could have a 6 inch supply line and everything be just fine.

Flow is always going to be limited to the smallest diameter component, so a standard size 5/8th's hose is capable of supplying more than enough water the the RV plumbing can handle.

[Electra glide]

My fresh water tank is filled from the same inlet as the city inlet and uses a switch between the two. So in my case a 5/8" hose would not fill my fresh tank faster.

[NMWildcat]

Originally Posted by Electra glide

My fresh water tank is filled from the same inlet as the city inlet and uses a switch between the two. So in my case a 5/8" hose would not fill my fresh tank faster.

Ah...... One of those improvements that isn't. Especially if you boondock.

[Electra glide]

Originally Posted by NMWildcat

Ah...... One of those improvements that isn't. Especially if you boondock.

Or trying to freshen the tank in the spring with bleach. We finally rigged up a way to do it but it was a pain. The one time I did boondock this year I was lucky and didn't run out of water. I've got small dc bilge/sump pump that I might try and rig up if I ever need to fill and no faucet.