Hello,
Whats the normal size pipe to use for a well system with a 7-8- gpm pump? Is ¾ PVC and ¾ CPVC too small for most of the main line especially after the pressure tank? Where is the best place to drop the pipe size down from the 1 ¼ NPT size at the water pressure tank?
Here’s my story:
I recently purchased a 10 year old home that has some issues with low water pressure/volume at the faucets only when 3 or more faucets etc. are used at the same time. To start with the pressure was very erratic and I found the well tank needed to be replaced(10 yrs old, very rusty water from it, and wouldn’t hold any air pressure) so I replaced it with a new 52 gal tank. This helped stabilize the pressure a lot but I still lose a lot of the volume when 3 or more of any faucets, toilets, dishwasher,washer etc are running at the same time. I can be taking a shower and someone flush a toilet and use a water faucet and I’ll lose about 2/3s of my water pressure and volume. I also did a test while looking at the pressure gauge under the house at the pressure tank while we had several faucets opened and it held the pressure very well dropping only slightly so it has to have a restriction in it somewhere.
Here is some of my water system info:
My main water line is about 125 feet of ¾ “ PVC pipe that runs from the well pump then under the house to a “T†at the Pressure Tank(The previous owner also said the well was not very deep-maybe 200 feet to add the the above 125 feet). Following the main line past the pressure tank “T†there is a ball valve that converts the pipe size down from ¾ PVC to ¾†CPVC. A few feet later is a 90 degree elbow and a few feet later another 90 degree elbow changing the pipe to a semi-clear line looks like the Culligan Man put in about the same size (3/4†CPVC) running to 3 tall Culligan water treatment tanks(2 water treatment and 1 filter). The run from the pressure tank T to the tanks is about 6 feet. The line coming out of the Culligan tanks is the same size ¾†CPVC to feed the the home.
Well pump motor pumped about 7.75 gpm measured at the line just before the pressure tank tee when I had it cut open to replace tank.
Pressure switch set 30/50 psi
1800 sq ft 1 1/2 story home.
Thanks for your help,
Brian
Whats the normal size pipe to use for a well system with a 7-8- gpm pump? Is ¾ PVC and ¾ CPVC too small for most of the main line especially after the pressure tank? Where is the best place to drop the pipe size down from the 1 ¼ NPT size at the water pressure tank?
Here’s my story:
I recently purchased a 10 year old home that has some issues with low water pressure/volume at the faucets only when 3 or more faucets etc. are used at the same time. To start with the pressure was very erratic and I found the well tank needed to be replaced(10 yrs old, very rusty water from it, and wouldn’t hold any air pressure) so I replaced it with a new 52 gal tank. This helped stabilize the pressure a lot but I still lose a lot of the volume when 3 or more of any faucets, toilets, dishwasher,washer etc are running at the same time. I can be taking a shower and someone flush a toilet and use a water faucet and I’ll lose about 2/3s of my water pressure and volume. I also did a test while looking at the pressure gauge under the house at the pressure tank while we had several faucets opened and it held the pressure very well dropping only slightly so it has to have a restriction in it somewhere.
Here is some of my water system info:
My main water line is about 125 feet of ¾ “ PVC pipe that runs from the well pump then under the house to a “T†at the Pressure Tank(The previous owner also said the well was not very deep-maybe 200 feet to add the the above 125 feet). Following the main line past the pressure tank “T†there is a ball valve that converts the pipe size down from ¾ PVC to ¾†CPVC. A few feet later is a 90 degree elbow and a few feet later another 90 degree elbow changing the pipe to a semi-clear line looks like the Culligan Man put in about the same size (3/4†CPVC) running to 3 tall Culligan water treatment tanks(2 water treatment and 1 filter). The run from the pressure tank T to the tanks is about 6 feet. The line coming out of the Culligan tanks is the same size ¾†CPVC to feed the the home.
Well pump motor pumped about 7.75 gpm measured at the line just before the pressure tank tee when I had it cut open to replace tank.
Pressure switch set 30/50 psi
1800 sq ft 1 1/2 story home.
Thanks for your help,
Brian