Plumbing issue: Effect of reducers in water line?

Question

I have a well that feeds the house. There is a large accumulator tank after the pump. The fella that put it together used 2" white PVC after that and fed the line to the house down into the concrete pumphouse floor (75 feet from the house) and he fed a similar line down to feed the irrigation pipes. Everything is 2".

I am planning on re-plumbing the system so that I can shut off the whole thing or just the house/just the irrigation. I also want to insert a whole house water filter in the line for the house. Most of the filters I've seen either have 3/4" or 1" fittings. Am I going to have any issues reducing the 2" line down to the smaller fitting and then back up to 2"? I'm sure that he reduced that 2" pipe down to 1/2 or 3/4 somewhere en route to the house's plumbing... I just am concerned about the effect (if any) of the extra reduction and expansion to accomodate the filter. I think the system is set for around 50-55 PSI if it matters. Thanks!

Answer 1

i dont see any problems arising from this, with all the 2" pipe the volume of water alone should give you plenty of pressure. After you reduce, you shouldnt have to increase coming out of the filter in other words if you went in to the filter or reduced down right before the filter and came out 1/2" or3/4" you need not increase back up to 2". this is assuming that your filter is situated outside along house wall or in garage, if the filter is 75' from the house, you will probably want to increase back up coming out of the filter to keep the water volume and pressure up.

Answer 2

Since you are over volumed considerably with the 2" service, you'll have no problem.
You're only 75 ft from the house to the well.

We plumb two bath houses with a 3/4" stubout for the yard line to attach to, which is also usually 3/4" up to 100 feet long.
Three bath houses get a 1" stub out and yard service line.

The friction loss with the whole house filter should not be anymore than that of a house softner.

You're good to go.

Answer 3

Yes, good question. This is a multi-part answer.

First, the main thing being affected here is the output volume or the gallons per minute flow. This will affect every faucet in the house, probably by about 15%-20%. This will be minimized by putting the whole house filter in line as close to the house as possible. Get as much uninterrupted water down that 2" line as you can.

The pressure will only be affected slightly if at all, so no worries there.