Compact design provides a visual pop-out button signaling impending bypass. With the application of additional pressure, the indicator cracks to permit bypass. The standard unit designed for use with a 0-12 GPM flow rate, 50 psid +/- 5 psid actuation, 60 psid +/- 10 psid cracks with a 10 psid minimum between actuation and crack. High pressure sensing port is located at the bottom of the indicator, opposite and along the axis of the signal button. The low pressure sensing port and bypass openings are located. Signal and bypass functions are accomplished in a very small, lightweight package. The overall length of the indicator with bypass is 1.800″ with a 0.743″ OD. Signal: Visual. Reset: Manual.