30 PSI Bottom Mount Pressure Gauge - 1.5" Tri-Clamp Compression MountThe 30 PSI Bottom Mount Pressure Gauge is a sanitary monitoring tool for pressurized fermentation and bright tank management. It features a 1. 5" Tri Clamp (TC) cap with a specialized compression mount, providing a pressure tight, sanitary seal that is easy to disassemble for cleaning. The high visibility dial reads from 0 30 PSI, providing the precision needed for carbonation monitoring and spunding (pressure fermentation) in craft beer production.