Cool How Much Psi Can A Garden Hose Handle References. Depending on the supply pipe size when you open. = water flow rate from the end of the hose (gpm) = pressure at the hose bib.
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= water flow rate from the end of the hose (gpm) = pressure at the hose bib. If you’re going to run constant pressure in water hose over time, don’t do it with a standard garden hose. These hoses can withstand a psi rating of up to 650!