2-1/2" Truflo OBS Series Plastic Gauge & Isolator (OBS-P-0-160)This Truflo OBS Series Panel Mount Gauge & Isolator is excellent for monitoring pressure in process systems. With an easy to read 2 1 2"' face and three adjustable plastic markers on each face, you can easily judge system pressure at a glance. Click the "Ask Question" button for more information! Product Details Body Material: Polypropylene (PP) Body Size: 2 1 2" Process Connection: PVC Pressure Range: 0 PSI ~ 160 PSI Glycerin filled for lasting