On 2/16/2020 2:59 AM, Jerry Salinsky wrote:
I am thinking of installing a 1 HP water pump to water my lawn. How many
sprinklers can it support? Is there a rule of thumb or some math to
calculate?

What would happen if I don't install enough spirnklers? I worry the
pressure in the pipe system would be high and ruin the pump.

The sprinkler is this type:

https://upload.wikimedia.org/wikiped...echanism_2.jpg


4 of those may push the limit of a 1 HP pump. You may find the pressure
too low for the heads to turn properly, based on my experience with a 1
HP sprinkler pump supplied by 6 1-1/4" PVC well points at 8 feet to the
water table.