Water hose diameter

It is not going to be an issue with an RV.

Bruce

It really doesn't make a difference in any application because you are never going to come across a full-flow hosebib or boiler drain anyway. They are all choked-down at the seat inside which is never larger than 5/16". The largest washer I have ever put in one of these valves is a #1/2, which is a half-inch in diameter. The seat is always smaller than the washer in a valve. Once it is restricted down, that's all you get. There's no way to get more volume/flow, no matter what size hose you put on it.

Bruce

Won't matter, I think, in an RV. I have had a one inch water hose. It delivers more flow if your water pressure and flow is high enough.
At the time I had a three stage, five hp peak ten, I think pump in the well. It ran ninety pounds of pressure and a lot of flow. The capacitor went bad and no one could find one to replace it. This about the time everything started coming from China.
It was labeled fire hose. Largest I've seen in a while is 3/4 from Costco. It's not the quality i want but it does have machined brass ends.
Water hose for the RV came from Fleet wood store and is 25 ft, 5/8 dia, I think, blue with stainless ends.

down home wrote:
I have had a one inch water hose. It delivers more flow if your water pressure and flow is high enough.

Again, the size of the hose won't make a difference if you are hooking up to a standard hosebib/sillcock or boiler drain. Even the 3/4" versions of these valves are restricted to less than 1/2" at the seat. There's nothing you can do about that -- once it is choked down, that's all you're going to get. Now, if you are coming straight off of a 1" pump or other source with a 1" hose with no restrictions from one end to the other, that's a different thing.

Bruce

Water volume will be determined by the smallest diameter in the system between water source and the faucet.

skipnchar wrote:
Water volume will be determined by the smallest diameter in the system between water source and the faucet.

This.

Bruce

nomad297 wrote:

skipnchar wrote:
Water volume will be determined by the smallest diameter in the system between water source and the faucet.

This.

Bruce

Not necessarily when you factor in the fact that we are also reducing the pressure. Flow is directly related to pressure and the area of the cross section. If we decreased the pressure while keeping the diameter the same, we would decrease the flow, but by increasing the diameter, we may be able to recoup some of that loss.

You can hook you a 2" hose........plumbing inside RV is 1/2"

JBinOR wrote:

nomad297 wrote:

skipnchar wrote:
Water volume will be determined by the smallest diameter in the system between water source and the faucet.

This.

Bruce

Not necessarily when you factor in the fact that we are also reducing the pressure. Flow is directly related to pressure and the area of the cross section. If we decreased the pressure while keeping the diameter the same, we would decrease the flow, but by increasing the diameter, we may be able to recoup some of that loss.

Who are "we," and what does pressure have to do with this?

I suppose we could just stick some 1/2" stand pipes up through the ground along the streets and as long as the fireman puts a 2" hose with a 2"x3/4"HT adapter on it, he will be able to get the same volume of water as he would from a normal fire hydrant.

Once the restriction is there, you cannot increase the volume. When the restriction is at the source, how are you going to increase the pressure to give you more volume?

Just wondering.

Bruce

An RV just doesn't have enough plumbing to make a difference. Most of my house which is considerable larger is only 1/2" copper.

nomad297 wrote:

skipnchar wrote:
Water volume will be determined by the smallest diameter in the system between water source and the faucet.

This.

Bruce

Not really true. It's not a case of "The weakest link". The longer the restriction, reduced diameter, the lower the flow. Each restriction you add even if they're all the same diameter will reduce the flow.