Fluorine-lined Check Valves
Automatic swing-check operation for preventing reverse flow of corrosive media.
APPLICATION
For strong acids, alkalis and other corrosive media in chemical, chlor-alkali, new energy, pharmaceutical, environmental and metallurgical processes. Compatibility must be confirmed against composition, concentration, temperature and pressure.
FEATURES
FEP/F46 fluoropolymer lining isolates corrosive media
Manual, worm-gear and pneumatic actuation options are available
Selection is based on medium, temperature, pressure and operating frequency
Dimensions and material combinations are subject to final technical documentation
SPECIFICATIONS
Nominal size: DN15-DN500
Pressure rating: PN10, PN16, PN25, Class 150
Design and face-to-face: HG/T 3704
Flanges: HG/T 20592 / ASME B16.5
Pressure test: GB/T 13927
MATERIALS
Typical combinations include WCB+FEP/F46, PTFE sealing and other compatible metals and fluoropolymers. Final materials are defined in the approved selection document.
