PFA LINED SIGHT GLASSES DESIGNED TO ENABLE PROCESS VIEWING THROUGH EITHER FLAT OR TUBULAR GLASS WINDOWS. TUBULAR SIGHT GLASSES ARE CONSTRUCTED USING A ROBUST TIE ROD CAGE AND HEAVY WALL BOROSILICATE GLASS. THEIR DESIGN OFFERS A 360 DEGREE VIEWING AREA AND THEY ARE AVAILABLE WITH BOTH CARBON AND STAINLESS STEEL FLANGES EITHER UNLINED OR PFA LINED FOR CORROSIVE DUTIES.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6 OF THE COMBINED NOMENCLATURE. CN 90261089 FOR OTHER INSTRUMENTS AND APPARATUS FOR MEASURING OR CHECKING THE FLOW, LEVEL OF LIQUIDS FOR EXAMPLE LEVEL GAUGE.