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brass stem
Mechanical and industrial process piping
Large single-family homes with outdoor space
while the female NPT threads provide quick and secure installation
🔩 8" Grooved Rigid Coupling – UL/FM Approved for Large-Scale Fire & Mechanical Piping
8" Grooved Flexible Coupling – Ductile Iron, UL/FM Approved pressure relief valve brass stem8" Grooved Flexible Coupling UL FM Approved for Fire Protection, HVAC & Industrial Piping This 8 inch Grooved Flexible Coupling is designed to connect large diameter steel pipes while allowing for controlled flexibility, movement, and vibration absorption. Its ideal for fire mains, chilled water systems, seismic installations, and industrial piping that require a secure yet dynamic connection. Made from high strength ASTM A536 ductile iron and coated
