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    The NIBCO® ductile iron butterfly valve is designed specifically to meet the rigorous requirements of automatic sprinkler systems. The unique EPDM molded-in seat liner with ductile iron disc provides bubble-tight shutoff at rated pressure. These valves are installed and monitored in fire protection applications where they remain in the normally closed position. A typical application would be fire pump test bypass lines. With the internal stem/disc geometric drive design there is no need for pins or bolts that may create leak paths or turbulence in the waterway. An extended neck allows for insulation up to 2 inches. Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO® butterfly valves for the most specified, versatile and economical valve option in commercial, mechanical and fire protection systems. NIBCO® butterfly valves are backed by the NIBCO 5-year 125% limited warranty.
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    Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style, LD-3510-C-8

    LD-3510-C-8 - Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style
    Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style, LD-3510-C-8

    LD-3510-C-8 - Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style
    Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style, LD-3510-C-8

    LD-3510-C-8 - Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style
    Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style, LD-3510-C-8

    LD-3510-C-8 - Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style
    Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style, LD-3510-C-8

    LD-3510-C-8 - Butterfly Valve - Ductile Iron, Fire Protection, Normally Closed, UL Listed, Lug Style
    UPC Code N/A 039923344458 N/A 039923344472 N/A 039923344489 N/A 039923344496 N/A 039923344502
    Type N/A Butterfly Valve
    Valve Size N/A 2 1/2 N/A 3 N/A 4 N/A 6 N/A 8
    Connection Type N/A L - Lug
    Material N/A Ductile Iron
    Stem Material N/A
    Valve Operator Material N/A
    Disc Material N/A Ductile Iron
    Liner Material N/A
    Valve Operator N/A Gear Opearator with Switches
    Description N/A LD3510C8 2 1/2 UL/FM BFV SIGNAL CLOSED N/A LD3510C8 3 UL/FM BFV SIGNAL CLOSED N/A LD3510C8 4 UL/FM BFV SIGNAL CLOSED N/A LD3510C8 6 UL/FM BFV SIGNAL CLOSED N/A LD3510C8 8 UL/FM BFV SIGNAL CLOSED
    Turns/Operation N/A Quarter-Turn
    Weight N/A 25.064 lb N/A 25.549 lb N/A 31.290 lb N/A 40.197 lb N/A 54.724 lb