Sight Flow Indicators provide a visual means of monitoring the flow of liquids or gases. They help ensure proper flow conditions and detect irregularities.
Series SF - The industry standard for common process flow stream pressures.
Available in NPT threaded-end and flanged designs, these sight flow indicators meet most standard installation requirements. Made from single-piece cast-construction bodies, these SFIs are available with all four styles of Penberthy indication.
Series STW - A slender body with easy access windows is a popular alternative to traditional slight flow indicators.
Threaded window sight flow indicators are labelled with the company logo as well as pressure and temperature ratings. Available in NPT threaded-end designs, all threaded window sight flow indicator sizes meet ANSI 150 pressure class standards. They are available with all four styles of Penberthy indication.
2. ANSI 300 & 600 Pressure Class Sight Flow Indicators
ANSI 300 & 600 Pressure Class High Pressure Sight Flow Indicators
Available in flanged models only, these sight flow indicators meet tough ANSI standards for 300 and 600 pressure class requirements. Made from single-piece, cast-construction bodies, these SFIs are available with all four styles of Penberthy indication.
3. Dual Window Sight Flow Indicators
Series DW - Added protection for pipeline systems in high traffic or confined areas.
Dual-window sight flow indicators provide two glass discs on each side, so that if either glass should fail for any reason, the other window can withstand pressures temporarily until the unit can be repaired or replaced. Dual-window sight flow indicators and Factory Mutual System approved dual-window sight flow indicators are available in 150 pressure class NPT models and 150 and 300 pressure class flanged models.
4. Fluoropolymer Lined Sight Flow Indicators
Fluoropolymer lined sight flow indicators can safeguard against chemical reactions in corrosive environments.
Lined sight flow indicators are designed for viewing corrosive media. Except for the borosilicate glass, the lining of the indicator covers all otherwise wetted parts. The lining provides protection from attack by chemicals and solvents which can cause rapid deterioration of standard plastics and common metals. Lined bodies are available with plain, drip-tube or single-sheet flutter flapper indicators.
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