Pressure Gauge: 2 1/2 inch face with a dial indicator from 0 to 300 psi. Liquid filled, quarter inch pipe, bottom mount. This gauge is liquid filled to absorb vibrations and to give an easily read dial. The optimum operating pressure is 175 psi and is indicated by a red mark. Download Manual and refer to page 10, final set up.
I tried several things to get rid of the flies, but nothing worked. I installed my Shoo-Fly system last year and have had no more fly problems ! I was shocked at how fast it worked.
Caryn Henry Barrel Horses - Deleon Springs, Fl 32130