FRPP flanges provide a standard flanged connection component for FRPP (flame-retardant polypropylene) piping systems, extending fire-safety and chemical resistance performance to the bolted connection points across a piping installation.
Key characteristics:
• Manufactured from flame-retardant polypropylene, consistent with the FRPP pipe and fitting range, so fire-safety performance is maintained across every component in the flow path.
• Heat fusion or socket connection to FRPP pipe delivers a joint that matches the material and joining method used throughout the rest of the piping system.
• Strong chemical resistance across a wide range of acids, alkalis, and organic media supports the same aggressive-service applications FRPP piping is chosen for.
• Standard flange face and bolt-hole dimensions support straightforward integration with mating valves, pumps, and equipment.
Specifying FRPP flanges alongside FRPP pipe and fittings avoids introducing a non-flame-retardant component at bolted connection points, which is particularly relevant in indoor industrial installations subject to fire code inspection covering the complete piping system.
Typical applications include chemical processing plant drainage and process piping, semiconductor and electronics manufacturing facilities, and installations where fire-safety code compliance must extend to every flanged connection in the system.





















