5/8" vs 3/4" Water Hose Question
- Thread starter Gebo
- Start date
- May 3, 2014
- 59,356
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
- Nov 12, 2017
- 11,999
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
There seems to be as many sets of numbers on this as there are web pages about the topic. Some show barely a difference between the two hose sizes, others say it's almost twice as much. They all seem to agree the length of the hose is very much a contributing factor.
Here's one such:
gardenhoseadviser.com
From that page:
If the hose has a diameter of 3/4 inch and its length is 25 feet, the average output will be around 72 gallons of water in one minute.
When the diameter is 3/4 inch, and the length is 100 feet, the average output will be around 19 gallons in one minute.
Here's one such:
5/8 vs 3/4 Inch Garden Hoses Comparison - Best Garden Hose
I think every household has at least one garden hose. It is one of the most used tools in garden and yard care. I can not imagine life without it, because it does all the work. Starting with washing the pathways, and ending with watering my flowers and plants. After my hose started leaking, I...
gardenhoseadviser.com
From that page:
25-Foot Garden Hose
The 25 feet long garden hose with a diameter of 5/8 inch will have 44 gallons of water output in one minute.If the hose has a diameter of 3/4 inch and its length is 25 feet, the average output will be around 72 gallons of water in one minute.
100-foot Garden Hose
As for the 100 feet garden hose, when the diameter is 5/8 inch and the hose has a length of 100 feet, the average water output will be 11 gallons in one minute.When the diameter is 3/4 inch, and the length is 100 feet, the average output will be around 19 gallons in one minute.
- Nov 12, 2017
- 11,999
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
My original hose bibs were plumbed after my house's pressure regulator.
One of my first home improvements was to add another hose bib (I only had two for the entire property!). I plumbed the new one to the irrigation circuit, which comes before the pressure regulator. That bad boy pumps!
If your house is plumbed like many, see if your irrigation circuit is tapped off the main before your house's pressure regulator. If you can add a hose bib to that circuit, and run your hose from there, you'll see a significant improvement in spa fill times.
One of my first home improvements was to add another hose bib (I only had two for the entire property!). I plumbed the new one to the irrigation circuit, which comes before the pressure regulator. That bad boy pumps!
If your house is plumbed like many, see if your irrigation circuit is tapped off the main before your house's pressure regulator. If you can add a hose bib to that circuit, and run your hose from there, you'll see a significant improvement in spa fill times.
It depends on the hose diameter and length and the pressure while the hose is on.
If the pressure was 60 psi for both hoses while the hose was on, the flow would be about 19.8 GPM for the 5/8" hose and about 32 GPM for the 3/4" hose.
However, the pressure will fall during use and the 3/4" hose will cause more pressure drop and you might get 25 GPM from the 3/4" hose and 17 from the 5/8" hose.
You can try it both ways to see the total time each way and then divide the tub volume by the time to get GPM.
You can also get a flow meter to check the GPM and a pressure gauge to see what the static and dynamic pressure is.
You can watch your house meter and use a timer to see the flow rate.
If the pressure was 60 psi for both hoses while the hose was on, the flow would be about 19.8 GPM for the 5/8" hose and about 32 GPM for the 3/4" hose.
However, the pressure will fall during use and the 3/4" hose will cause more pressure drop and you might get 25 GPM from the 3/4" hose and 17 from the 5/8" hose.
You can try it both ways to see the total time each way and then divide the tub volume by the time to get GPM.
You can also get a flow meter to check the GPM and a pressure gauge to see what the static and dynamic pressure is.
You can watch your house meter and use a timer to see the flow rate.
Watts 3/4 in. Plastic Water Pressure Test Gauge DP IWTG - The Home Depot
When you choose this hose connection gauge, you can rest assured that you're getting a quality product to test water supply pressures within a distribution system. Its red indicator hand holds at the highest reading registered for detection of thermal expansion pressure surges. Rubber garden...
www.homedepot.com
Worth Garden Adjustable Garden Watering Flow Meter A105A00 - The Home Depot
The adjustable garden watering flow meter is made of strong plastics. It weighs 0.23 lb. It can regulate the water flow rate which helps growing plants, fruits, herbs & etc. The olive green and black color combination makes it an attractive and functional addition to your garden.
www.homedepot.com
Cubilan Water Meter, Water Flow Meter for Garden RV Hose, Measure Gallon or Liter Water Consumption, Fits 3/4-inch Outdoor B09742V86M - The Home Depot
This water flow meter will help you measure the daily water usage and monitor the water flow rate in real time as you water, a good helper to control your water usage accurately and prevent over watering.
www.homedepot.com
Thanks for the info. My Hot Tub is about 25 ft from spigot. The hose I have is 100’ 3/4 Eley on Eley Reel that uses a 6’ 5/8 Eley connector from the spigot to the Eley Reel.
I’m trying to see if it would save me a lot of time filling my 355 Gallon Hot Tub with a 3/4 25’ hose. I’m thinking it would figuring the 5/8 connector and the 100’ of hose.
I’m trying to see if it would save me a lot of time filling my 355 Gallon Hot Tub with a 3/4 25’ hose. I’m thinking it would figuring the 5/8 connector and the 100’ of hose.
- Nov 12, 2017
- 11,999
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Yah, you've got two restrictions going on, the 5/8" connector and the 100' length. I think you're on the right track: 25' of 3/4" hose should see you quite a bit of improvement.
How much ya wanna spend? Here's a 25' one-inch hose. That should be able to wash your spa down the street!
Harbor freight has a 25' x 1" discharge hose, that rolls up flat for about 28 bucks. I wonder if that would work better than a 3/4" hose. It doesn't have to hold up like a hose, to stress and stain and UV. Just a few times a year, I presume, then stored away. There are even larger discharge hoses, like 1.5". I'm not sure that's the right tool for filling a spa, but they're cheap if you want to experiment. Discharge hoses are made to move a lot of water.
1 in. x 25 ft. PVC Discharge Hose
Amazing deals on this 1In X 25Ft Pvc Discharge Hose at Harbor Freight. Quality tools & low prices.
www.harborfreight.com
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Get a pressure gauge and put it on a different spigot and check the house pressure.
Turn on the hose and then see what the house pressure drops down to.
Turn on the hose and then see what the house pressure drops down to.
Dirk,Yah, you've got two restrictions going on, the 5/8" connector and the 100' length. I think you're on the right track: 25' of 3/4" hose should see you quite a bit of improvement.
How much ya wanna spend? Here's a 25' one-inch hose. That should be able to wash your spa down the street!
Harbor freight has a 25' x 1" discharge hose, that rolls up flat for about 28 bucks. I wonder if that would work better than a 3/4" hose. It doesn't have to hold up like a hose, to stress and stain and UV. Just a few times a year, I presume, then stored away. There are even larger discharge hoses, like 1.5". I'm not sure that's the right tool for filling a spa, but they're cheap if you want to experiment. Discharge hoses are made to move a lot of water.
1 in. x 25 ft. PVC Discharge Hose
Amazing deals on this 1In X 25Ft Pvc Discharge Hose at Harbor Freight. Quality tools & low prices.
I’m heading out to Harbor Freight. I was thinking about how to store my additional hose. Your suggestion solves both my issues.
I owe you!!!
You might not get as much benefit as you think.
The water is still limited by the plumbing from the main line to your house and then through any of the house plumbing.
If you opened the spigot with no hose attached, that is your maximum flow possible regardless of the size of the hose.
So, you could get a 12” diameter hose and it would not make any difference.
You will probably get some benefit, but the limit is still whatever you would get without a hose.
The water is still limited by the plumbing from the main line to your house and then through any of the house plumbing.
If you opened the spigot with no hose attached, that is your maximum flow possible regardless of the size of the hose.
So, you could get a 12” diameter hose and it would not make any difference.
You will probably get some benefit, but the limit is still whatever you would get without a hose.
But on the bright side, this will serve as my drain hose as well. 2 birds one stone.
- Nov 12, 2017
- 11,999
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
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