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.
With over 200 mares, fly prevention is high on our list of priorities. We have been using Shoo-fly for nearly a decade now and we are extremely pleased with the efficacy of the product and service.
Dr. Phil Matthews, DVM - Summerfield, FL