frankflynn
Active Member
- Joined
- Jul 8, 2011
- Messages
- 27
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Hi,
I have a 1930's home and have over the years been replacing the original galvanized pipes with copper. The original galvanized was 3/4" everywhere.
For each bathroom I used 1/2" pipe because I wanted hot water sooner and with today's low flow faucets and shower heads 1/2" provides plenty of water pressure. This has worked well.
But now it's time to do the Kitchen, straight line from the Hot Water Heater which also has a branch to the dish washer and laundry. So the math is straight forward (I'm using the OD which is not technically correct but it's close).
5.3035714285714235 cubic inches per foot in 3/4" pipe
2.357142857142855 cubic inches per foot in 1/2" pipe
Or over the 40' almost 1 gallon (0.91836734693877) for 3/4"
and over 40' less than 1/2 gallon (0.40816326530612) for 1/2"
Seems like 1/2" is the way to go - but is this enough? My washer is a HE low water user, also the dish washer. Filling a bucket from the kitchen sink might take longer (it's not clear to be that the current hot water line is not filled with rust like the others were).
Any thoughts?
Frank
I have a 1930's home and have over the years been replacing the original galvanized pipes with copper. The original galvanized was 3/4" everywhere.
For each bathroom I used 1/2" pipe because I wanted hot water sooner and with today's low flow faucets and shower heads 1/2" provides plenty of water pressure. This has worked well.
But now it's time to do the Kitchen, straight line from the Hot Water Heater which also has a branch to the dish washer and laundry. So the math is straight forward (I'm using the OD which is not technically correct but it's close).
5.3035714285714235 cubic inches per foot in 3/4" pipe
2.357142857142855 cubic inches per foot in 1/2" pipe
Or over the 40' almost 1 gallon (0.91836734693877) for 3/4"
and over 40' less than 1/2 gallon (0.40816326530612) for 1/2"
Seems like 1/2" is the way to go - but is this enough? My washer is a HE low water user, also the dish washer. Filling a bucket from the kitchen sink might take longer (it's not clear to be that the current hot water line is not filled with rust like the others were).
Any thoughts?
Frank