I bought a house, it's on a share well. The well pumps water into a holding tank. Everybody has separate lines running from the holding tank to their homes.
At the home, I have a pressure tank and flowtec pump to pull water from the holding tank.
I want to replace both the pump and pressure tank. (Leaking and suspecting the bladder in the pressure tank is leaking)
Factory Advice for Pressure Tank and Pump Plumbing:
The pressure tank has 1 and quarter inch fitting.
The pump has a 1 and quarter inch inlet and a 1 inch outlet.
The manual states "These sizes should not be reduced".
Plumbing from storage tank to house:
The PVC pipe from the storage tank to the house runs about 150ft and is 1 inch. This line is then reduced to 3/4 inch copper pipe. This 3/4 inch copper is the home's core plumbing size (it's a manufacture home).
Current plumbing at the pressure tank and pump:
The current pressure tank and pump are located next to the house. At this location, there's a "from storage tank" line and a "to house" line both are 3/4 inch copper.
The current (old) system has the 3/4 inch copper line "from the storage tank" which is increased to 1 inch. Then the pump intake has the 1 and quarter inch reduced to 1 inch (Fitting).
The pressure tank has the 1 and quarter reduced to 1 inch (fittings), then 1 inch pipe to the 1 inch pump outlet fitting. Then runs as 1 inch pipe, which is further reduced to a 3/4 inch copper line "to the house".
The current system has ran with the above plumbing setup for at least 5 years with no issues. I also believe that the pressure tank is 7 years old according to the previous owner.
Should I replace the plumbing between the pump and pressure tank with the recommended pipe size even though the "from storage tank" and "to house" copper lines are 3/4 inch?
Can I run 3/4 inch plumbing between everything? What are the long term or short term problems I could encounter?
Sorry for so long, but I'm trying to cover everything in detail.
House has 2 baths, pressure tank is 50 gallons, pump is 3/4 hp, and only 2 people live in the home.