Sight Glass with 3/8" NPT threads Application Fluid Level Indicator Connection Size 3/8" Connection Type Male Fitting Material Tritan / Viton O-Ring Material Tritan / Co-Polyester Style 3D Type Sight Glass MFR DESCRIPTION 466510 - INTELLIPORT GLASS 3/8" MALE NPT Flat front glass with etched and painted cross hairs, allowing a clear view of fluids without distortion Shatterproof, stain-proof and chemical-resistant Built-in sampling port Access point for quick sampling and hand-held instrument tests Corrosion indicator Easy to remove and view magnetic plug nut allows for easy glass rotation or removal If the full system is not desired, individual sight glasses are available