SuperWhole 2" 51MM Flow Sanitary Sight Glass Tri-clamp Stainless Steel SS316 US Stock Brand New,Body material:Stainless Steel 316. Note: This Item would be shipped from LA,United States. Sight Glass Flow Indicators provides a full 360 to observe fluid flow in any direction. The Sight Glass Flow Indicator is ideal for application where the use of glass is permittable. The Sight Glass Flow Indicators are ideal for high purity applications! Max. Temperature: 300 F. Max Pressure: 120 PSI 1 piece x 2" 38MM Sanitary Sight Glass Tri Clamp Ferrule Type SS316.