Copied WD-3510-4 Butterfly Valve, with Gear Operator
WD-3510-4 Butterfly Valve, with Gear Operator
NIBCO, NLH800D, WD-3510-4 Underwriters Laboratories & Factory Mutual Butterfly Valve, with Gear OperatorThe 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. 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. Choose NIBCO® butterfly valves for the most specified, versatile and economical valve option in commercial, mechanical and fire protection systems.Features:Valve pressure rating 250 psi wwpWafer styleEPDM molded-in seat linerDuctile iron discStainless steel stem with copper bushingsGeometric driveExtended neckOperating mechanism: Manual gear operatorUL/ULC ListedFM ApprovedUL Listed for Indoor and Outdoor ServiceDesigned to meet MSS SP-67MSS SP-25 (markings)Approved by New York City MEA 9-97-E, Vol.2 when assembled with appropriate NYC indicator flagCalifornia State Fire Marshal Listing No. 770-1243:104.
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