Nibco WD-3510 Ductile Iron, Fire Protection, UL Listed Butterfly Valve

Manufacturer: Nibco

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. 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.

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Features Applications Model Document

Valve pressure rating 250 psi wwp
Wafer style
EPDM molded-in seat liner
Ductile iron disc
Stainless steel stem with copper bushings
Geometric drive
Extended neck
Operating mechanism: Manual gear operator
Available with (suffix 8N) or without (suffix 4N) internal monitor switches
Available in-ground post (suffix GP) or wall post (suffix WP) versions - UL only
UL/ULC Listed
FM Approved
UL Listed for Indoor and Outdoor Service
Designed to meet MSS SP-67
MSS SP-25 (markings)
Approved by New York City MEA 9-97-E, Vol.2 when assembled with appropriate NYC indicator flag
California State Fire Marshal Listing No. 770-1243:104
Size range 2” to 12”

The NIBCO® wafer type butterfly valve is classified as a fire protection control valve that are Underwriters Laboratories listed and FM Approved for bubble-tight shutoff at 250 psi water working pressure. Wafer valves are recommended for quick installation and removal from piping.

Mfr. Part No.	Description

Nibco WD-3510 Ductile Iron, Fire Protection, UL Listed Butterfly Valve

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