Plumbing question: location for a pressure reducing valve

[MikeT]

I have good water pressure--too good.  100 psi.  So I have a pressure reducing valve, but I wonder where and how I should install it.

I am running 1" PEX from my street connection to the main.  It goes in a trench into my house and into my manifold, a distance of about 35 feet.  Do you think it is okay to install the pressure reducing valve just above my manifold?

Thanks,
mt

[ScottA]

It should be right next to the water meter. You can put it in the house but it needs to come before any conections made to the service.

[rocking23nf]

what are the benifts of reducing the pressure? less of a water bill?

[MountainDon]

Our pressure reducer is attached to the meter using a union.

100+ lbs pressure is hard on fixtures and solenoid valves. You only need 40 psi inside the house, but up to 60 is considered okay. We have 35.

[MikeT]

My meter is in the street.  Shouldn't I put the pressure reducing valve in the house?  Or should I construct a box out of PT wood with a lid and put the pressure reducing valve up next to the street?

mt

[muldoon]

my meter is by the street also, but the entrance into the house is on the side and comes in about 3 feet up.  I currently have a two filter "whole house" filter there to do the basic pre-filter from the city water.  After the two filters, the service enters the house. 

I really like the idea of a whole house filter and it has worked great.  They last about 6 months and the water pressure drops off a bit inside to let me know to change them.  If you are going to install a pressure reducing valve, you might want to consider adding a filtration setup and pressure reducer at the same time. 

If so, it might look like
meter -> underground pipe to house -> where pipe comes up to enter house -> filters and ball shutoff valve -> pressure reducer -> house entrance.

If you want I can take some pictures of what I have when I get home. 

[ScottA]

My meter is in the street.  Shouldn't I put the pressure reducing valve in the house?  Or should I construct a box out of PT wood with a lid and put the pressure reducing valve up next to the street?

mt

They make plastic boxes you can use for this purpose. They generally run about $20.

[MountainDon]

You could put it in the house, however for me part of the exercise was to keep the city high pressure water, now running about 125#, out of the house altogether.