8" Grooved Flexible Coupling – Ductile Iron, UL/FM Approved pressure relief valve Material: Lead-free copper (ASTM B75/B88)

Material: Lead-free copper (ASTM B75/B88)

Large single-family homes with outdoor space

Ideal for fire protection mains

Made from high-strength ASTM A536 ductile iron and coated in orange enamel or galvanized finish

while the female NPT threads provide quick and secure installation

8" Grooved Flexible Coupling – Ductile Iron, UL/FM Approved pressure relief valve Material: Lead-free copper (ASTM B75/B88)8" 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