What type of piping material can be used according to NFPA 58 for the liquid piping system in dispenser

• A. PVC pipe
• B. Scheduled 80 thread pipe
• C. Copper tubing
• D. Cast iron

Answer: (B)

NFPA 58 requires the liquid piping that carries propane to a dispenser to be metal and rated for the service, providing strong, leak-tight joints in outdoor, high-traffic areas. The best match is threaded steel pipe with a Schedule 80 wall thickness. This choice combines robust mechanical strength with reliable threaded connections, making it well-suited to the pressures of liquid propane and the rough conditions around a dispenser. Other materials like PVC, copper tubing, or cast iron aren’t appropriate for this service in NFPA 58 because they can be incompatible with propane, weaker under pressure, or susceptible to damage or failure in the dispenser environment. Using Schedule 80 threaded steel pipe helps ensure safety and durability of the liquid piping system.