The highest point in a lawn sprinkler system is 35′ higher than the water supply main. The minimum pressure required at the highest point in the is 35 psi. Do not allow for friction loss. The pressure at the supply main must be at least __ psi.

The highest point in a lawn sprinkler system is 35′ higher than the water supply main. The minimum pressure required at the highest point in the is 35 psi. Do not allow for friction loss. The pressure at the supply main must be at least __ psi.