In-light Sight Glass Flow Pipe OD:76MM, Ferrule OD:89MM, Fits Tri-clamp:3" Max Pressure: 120 PSI,Max Temperature: 300 Fahrenheit In-line Sight Glass with Clamp End, SUS316 body material Full bore design,Sight Glass Flow Indicators provides a full 360 to observe fluid flow in any direction. Can be used in vertical or horizontal position The Sanitary Sight Glasses are designed for sanitary applications used in the food, dairy, and pharmaceutical industries