Pressure Drop Expectation: 1/2 Inch Garden Hose 50m, 2.5 Bar Initial Pressure, Laid Flat

Question

Hello
What can I expect the pressure drop on the garden hose as in the subject? The hose is laid flat in the garden, pressure at the exit from the cottage - 2.5 bar (1/2 inch connector). These are the ones I have throughout the installation.
What pressure can I expect at the end of the hose?

Anonymous · Answer

Hello.
The pressure at the outlet will be the same as you block the hose outlet (only in horizontal arrangement), but its length will reduce the flow due to flow resistance, i.e. how the water will run from a tap without a hose, e.g. 15l / min is the same tap loaded with a hose depending on the shape of its arrangement and the smoothness of its interior, it will have flow resistance, which determines the decrease in flow, e.g. up to 10l / min.
The same 50m hose, laid vertically at 2.5 bar, is filled to a height of 25 meters.

unky · Answer

ok, a decrease in the amount of flow forces me to use a 3/4 hose
Gentlemen, what about quick couplers and their flows? I will connect two 3/4 hoses with quick couplings. I will buy quick couplings for 3/4 hose, but what is the diameter of the quick couplers? From what I noticed the quick couplings have different diameters for connecting the hose, but the connecting element has a standard diameter independent of the hose diameter. When connecting two 3/4 25 meter hoses, how can I reduce the amount of water flow by connecting the hose with quick couplings?

Anonymous · Answer

Quick couplings are unlikely to introduce a significant flow limitation, as far as I remember their internal diameter is similar to the diameter of the hose, maybe slightly smaller.

unky · Answer

Approximately the size of a 1/2 inch hose, but rather not 3/4 inch

Anonymous · Answer

And do there have to be quick couplers, because you can buy a whole 50m.
The hose can be gently stretched at the joints and tube inserts of the appropriate diameter can be used, and the whole thing is screwed together with clamps.
The situation of narrowing on the couplings is worse in the alu-pex installation, where with 16 mm pipes the couplings are 8 mm in diameter.
I would be more worried about the porosity of the inside of the hose on this length than with the fittings, in fact it may be that the only solution is to give a thicker hose to increase the flow.
But will there not be a constriction at the end of the hose in the form of a spray tip that also restricts the flow?

kkknc · Answer

Nothing. When the hose lies, there is no pressure drop.

Pressure Drop Expectation: 1/2 Inch Garden Hose 50m, 2.5 Bar Initial Pressure, Laid Flat

Post #1

Post #2

Post #3

Post #4

Post #5

Post #6

Post #7

Didn't find an answer? Ask Artificial Intelligence

Topic summary