
FM/UL Grooved Couplings for Fire Protection. FM & UL Certified: Products are listed and approved by FM and UL for fire protection systems. High Strength Material: Ductile cast iron body with tensile strength of 450MPa, meeting ASTM A536. Customizable Gasket: Gasket material can be EPDM, NBR, or Silicon Rubber based on your option. Surface Treatment Options: Available surface treatments include painting, galvanized, or epoxy resin powder. Wide Size Range: Nominal sizes available from 1 inch to 12 inches for various applications. High Working Pressure: Rated for a working pressure of 300 PSI (2.07 MPa). Flexible Connection Types: Offers both rigid and flexible grooved coupling options for different needs. Export Standard Packing: Packed in cartons on pallets following export standards for safe transport.