
Ductile Iron Grooved Fittings Couplings FM, UL Fire Fighting. Ductile Iron Construction: Housing made of ASTM A-536 grade 65-45-12 ductile iron for superior strength. 10-Year Warranty: Comprehensive 10-year warranty coverage for mechanical defects and performance. FM and UL Certified: Product certified by FM and UL for reliable fire fighting system applications. High Pressure Rating: Designed for working pressure up to 300 PSI (2.07 MPa) with rigid joint stability. Customizable Coating: Available in red, orange, or optional hot/electro galvanized and Dacromet finishes. Multiple Gasket Options: Choose from EPDM, Silicone, or Nitrile rubber based on specific fluid and temperature needs. Grade 8.8 Bolts: Equipped with heat-treated plated carbon steel bolts and nuts meeting Grade 8.8 standards. Wide Size Range: Available in nominal sizes from 1 inch to 12 inches for diverse piping requirements.