Hose length The length of your hose can seriously affect the garden hose flow rate, as the longer the hose, the less water pressure there will be. This is because as water travels down the hose, it can lose pressure and offer far less flow rate, commonly referred to as friction loss.
Static (no flow) water pressure is not affected by system length or geometry. Dynamic pressure is reduced when hose length increases due to friction losses.
These are maximum recommended flow rates, and this chart is based on a maximum acceptable pressure drop of 15% per 100 feet of hose.
If your hose is 100 feet or less, no, your hose will not likely have issues. However, if you want to use a hose that is a few hundred feet long, you will lose a noticeable amount of water pressure. Most pressure washers are not sold with long hoses because the best pressure is achieved from a shorter hose.
The longer the hose, the greater the pressure drop.
Hose length
The length of your hose can seriously affect the garden hose flow rate, as the longer the hose, the less water pressure there will be. This is because as water travels down the hose, it can lose pressure and offer far less flow rate, commonly referred to as friction loss.
For small yards, patios, and balconies, 25 feet garden hose should be enough. Larger garden may need 150 feet or even longer to reach the farthest corners. If you need to go past 100 feet, consider buying a 100-foot or a 125-foot. Believe me，100-foot hose is not too long.
It all depends on if you are using it for the inlet or outlet of the pressure washer. If you are using it on the inlet side, the answer is yes you can use a 100 ft garden hose. But there are going to be some drawbacks compared to using a shorter hose.
Pressure loss is directly proportional to hose length. Since the flow charts are based on 100' lengths, loss for 100' must be converted to 150' of hose. Pressure loss for 100' of hose is 20 psi, therefore, the loss in 150' of hose is: 150'/100' x 20 psi = 30 psi.
For example, if the diameter of a pipe is reduced over a very short distance, you'll be able to observe the resulting increase in pressure quite noticeably, as in the garden hose scenario above.
Pumps should not run longer for 1 or 2 minutes. The reason is this could cause motor damage.
In general, the pressure drop is determined by multiplying the fluid velocity, the fluid density, and the head loss, which is the equivalent of the pressure drop in terms of the height of the fluid.
Pressure drop in piping is directly proportional to the length of the piping—for example, a pipe with twice the length will have twice the pressure drop, given the same flow rate.
If you have low water pressure to begin with, it may not be a good idea to connect a garden hose splitter as that will decrease the water pressure even more.
What causes low water pressure include pipe blockages. Debris buildup, including dirt, sand, hardened oil and grease, food remnants, or foreign objects, could obstruct pipes. If these contaminants accumulate due to fractures in the water main, they can lead to blockages.
A typical garden hose flow rate is usually between 9 and 17 gallons per minute. The average garden hose GPM would be around 12 to 13, but this can vary depending on the type of hose.
Not much. Under 300 feet, Most users won't notice a significant difference in pressure loss. While some operators may notice pressure drop in longer hoses, it usually won't be enough to significantly hamper cleaning performance.
CALCULATING THE HOSE LENGTH
So, if the hose goes around a 90 ̊ bend, which is 1/4 of a full circumference, and the radius of the bend is R, then the length of the hose around the bend is = 1/4 x 2πR. Or half way round, in a U-shape, = 1/2 x 2πR.
First, she started with a garden hose that's been turned off and removed the spray nozzle. Next, she folded roughly two feet of the hose from the spray end to kink it. She pointed the hose upward and poured dish soap straight down into it. (By kinking the hose, she controlled how far the soap could flow.)
For small yards, patios, and balconies, 25 feet should be enough. Larger yards may need 50 feet to reach the farthest corners. If you need to go past 50 feet, consider buying a 50-foot and a 25-foot, or two 50-foot hoses. 100 feet of garden hose full of water is very heavy to lug around.
The Science of Hose Lengths
Assuming a best-case scenario – working on flat ground and normal operating conditions – you typically won't lose much pressure as you increase the length of hose that you use. For instance, on a 3/8-inch hose with a 3 gallon/minute flow, the loss of pressure per 100 feet is about 50 PSI.
The exact tables indicate that a single 100-foot length of 1-1/2-inch hose holds 9.2 gallons of water (Table 3.1). Use the rounded value of 9 gallons per 100-foot length of 1-1/2-inch hose.
If your lawn is 500-2,000 sq ft, we recommend going with a 50' long hose. If you have a bigger lawn, 2,000-5,000 sq ft, the ideal hose will be 75' - 100' long. For odd-shaped lawns that require more flexibility, consider buying two shorter hoses and a connector to shorten or extend the length as needed.