Below we discuss the key factors that can impact the flow rate of your garden hose.
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. If you need a longer hose, then it will likely be worth having a smaller diameter. A smaller diameter can increase the amount of water pressure as there is less space for the water to travel through and therefore lose pressure.
Does a longer garden hose decrease water pressure?
Yes, the longer the hose, the less water pressure there will be at the far end. This is because the water has further to travel, and more surface area to come into contact with. This friction over time results in a loss of energy and reduced viscosity, with less leftover pressure and a reduced flow rate by the time it leaves the far end of the hose.
What is the average length of a hose?
Average hose lengths are usually 25 metres long, and the flow rate can decrease by 75 percent when you quadruple the length of the hose. Shorter hoses will give you the best results for your plants. If you have a larger garden, this is an instance where a soaker hose or drip irrigation system may be a better option for you to ensure even coverage across your entire garden.
Does hose diameter affect water pressure?
A Larger diameter hose helps maintain the current water pressure as there is less resistance to the natural flow. A smaller diameter restricts the water flow, and in turn reduces the water pressure, but it increases the velocity (speed) the water travels.
The most common sizes are 1/2" in UK. 5/8" is commonly used in Europe and US. 3/4" is used by professional landscapers and horticulturalists.
Does a smaller diameter hose increase water pressure?
Water pressure cannot be increased once it reaches your home, however, the velocity of the water can be changed by restricting the size of an outlet. That is to say, the velocity of the water can be changed with a smaller hose diameter. It is possible to increase water pressure when it reaches your home, but it will require a pump, which can be costly depending on your needs.
Water is incompressible, so cannot ‘gain’ pressure by pushing it through a smaller diameter pipe. Pressure is linked to gravity, which is why water pressure is greater the deeper you go under the sea. It is not something that can be altered for your watering needs, which is why it is best to look into your options to see what can be done to get maximum results for your garden.