I need to replace all the copper; currently about 45 feet of 3/4 copper to the place where 1/2 branches go to all the fixtures and run 10-15 feet.
If I ran a 3/8 PEX home run to near the water heater, how much reduction in flow am I likely to get to
1) a tap -- might be OK for lav but not enough for kitchen?
2) tub -- usually used as a shower, but I want to be able to fill the tub fast enough.
Is there a table of capacity in gallons per inch for copper, CPVC and PEX -- they all have different IDs. I'd like to have an idea of how many gallons I'd be saving when flushing the line waiting for the hot water to get to the tap in return for less flow.
Currently it takes 2-3 gallons to get hot. We dump it into the washing machine.
Is 3/8 PEX ok for a shower -- I don't have any use for low flow heads; paying to pump from a well teaches you to control the flow using the valve !
Is there really any advantage to putting a hot manifold after about 20 or 30 feet of 3/4, when the smaller diameter will run for 10-20 feet each? Seems no different than the way its laid out now with the 1/2 from the tail end of the 3/4 run.
I don't really have room for lots of pipes, but I want to reduce the waste.
Maybe three hot home runs:
3/8 to kitchen
1/2 for about 45' with 1/2 branches to all 3 lavs (1/2 will clear the line faster than 3/8 ?)
1/2 that branches at the tail to serve both tub/showers. This is the current situation except the majority of the run is 3/4. Would all 1/2 reduce flow too much if both showers were running at the same time?
I'll leave the cold as it is.
If I ran a 3/8 PEX home run to near the water heater, how much reduction in flow am I likely to get to
1) a tap -- might be OK for lav but not enough for kitchen?
2) tub -- usually used as a shower, but I want to be able to fill the tub fast enough.
Is there a table of capacity in gallons per inch for copper, CPVC and PEX -- they all have different IDs. I'd like to have an idea of how many gallons I'd be saving when flushing the line waiting for the hot water to get to the tap in return for less flow.
Currently it takes 2-3 gallons to get hot. We dump it into the washing machine.
Is 3/8 PEX ok for a shower -- I don't have any use for low flow heads; paying to pump from a well teaches you to control the flow using the valve !
Is there really any advantage to putting a hot manifold after about 20 or 30 feet of 3/4, when the smaller diameter will run for 10-20 feet each? Seems no different than the way its laid out now with the 1/2 from the tail end of the 3/4 run.
I don't really have room for lots of pipes, but I want to reduce the waste.
Maybe three hot home runs:
3/8 to kitchen
1/2 for about 45' with 1/2 branches to all 3 lavs (1/2 will clear the line faster than 3/8 ?)
1/2 that branches at the tail to serve both tub/showers. This is the current situation except the majority of the run is 3/4. Would all 1/2 reduce flow too much if both showers were running at the same time?
I'll leave the cold as it is.