Second Pressure Tank??

[Harleymsn]

I am sure I read a post a few years back similar to this but can't find it.
I am in the process of building a new barn and I want to put a full bathroom in it. The bathroom in the barn will be about 75-80' from my pressure tank in the house. I plan to run a single 3/4" line underground to the barn and then put a separate small hot water tank there. My question is, if the pressure loss is too much, can I place another pressure tank in the barn? If I were to do this would it also require a second in line pump of some sort?

 

[Highbeam]

Yes you can do it, good idea too. No additional pump is needed since the line pressure will pressurize the tank in due time. More pressure tanks are always better since your pump won't need to cycle as much. I would rather run a larger line in the first place though. You'll find that 1" is not much more money than 3/4".

 

[Phils]

Another reason it'd be a good idea to add the second pressure tank in the barn is that you'll reduce the possibility of creating a "water hammer" situation. And, as posted above, another pump isn't needed.

Phil

 

[Harleymsn]

Highbeam, I realize that the cost difference between 3/4 and 1" is minimal, I planned on using 160psi Polyethylene Coil Pipe. The reason I planned on 3/4" is that is the size pipe coming out of the filtration system to the rest of the house.

 

[Highbeam]

Water lines don't work on the weakest link principle. The loss in flow at the end of a long pipe is a result of the sum of the losses. Just because you have a 3/4" line somewhere does not mean that there is no sense in upsizing a long run. You will lose less to friction with a larger pipe on the long run to the shop.

For example, we see a lot of standard residential 5/8" water meters feeding one inch or 1.5" lines that run way back to the house. My home has 1" copper line to the 5/8" meter and the house is only 50 feet from the meter.

I agree with the use of the PE coil pipe. It is stout stuff with a very good track record.

 

[CurlyDave]

I checked prices of pipe about a month ago, and 1" schdule 40 PVC was 30 cents per foot at the local Home Depot. It rates at 450 psi.

Maybe I am just more used to working with it, but for $25 worth of pipe, I would go with 1" PVC.

 

[turnkey4099]

</font><font color="blue" class="small">( I checked prices of pipe about a month ago, and 1" schdule 40 PVC was 30 cents per foot at the local Home Depot. It rates at 450 psi.

Maybe I am just more used to working with it, but for $25 worth of pipe, I would go with 1" PVC. )</font>

Same here but for buried pipe, I up it to sched 80

Harry K

 

[texbaylea]

I would want a tank with a bladder and would put a check valve upstream of it. That would maintain pressure downstream of the new tank even if pressure should drop upstream, at least until the pressures equalized.

Vernon