Pressure at tank 60 and kitchen sink 40

[henryccca]

I’m installing a RO system for my friend and I have found that the pressure at the kitchen sink for feed water to be 35-40 psi but the pressure tank is reading 60psi, when I investigated a little more something just looked odd to me when the well line enters the house and pressure tank in relation to where it goes onto the rest of the house. Hopefully the picture can be seen otherwise it will be difficult to explain my friends set-up. After leaving the pressure tank area the water line goes through the meter, a whole house filter and then a water softener before moving on to the kitchen sink. My main concern at the moment is the pressure tank area .

 

[henryccca]

The water comes into the house and then to the rest of the house before it gets to the pressure tank. Am I missing something here or just overthinking it ?

 

[Sponsor]

 

[Cacher_Chick]

What size pipe is that? In PEX, I would expect to see 1-1/4 pipe from the well to the tank, and 1” on the main trunk lines to the heater and distribution manifold.

 

[henryccca]

I believe it’s 3/4 all the way up to the distribution manifolds and then goes to 1/2 “

 

[Valveman]

That is a common setup and will work fine. But you have a lot of stuff between the pressure tank and kitchen sink to cause a loss of pressure. Bypass the softener and clean or replace the cartridge filter and you will see more pressure at the sink.

 

[henryccca]

bypassed the softener and nothing improved , I will be changing the filter next. Ty

 

[Cacher_Chick]

The I.D. of PEX is smaller than copper, and each fitting inserted into PEX pipe further reduces the flow rate. When using PEX, it should always be sized one size larger than the equivalent copper pipe sizing.