The NIBCO® ductile iron butterfly valve features a unique molded-in Buna-N seat liner with aluminum bronze disc, recommended for most water applications. 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.
The NIBCO® lug type butterfly valve is provided with undercut discs for actuation purposes only. The valve is specifically designed for low pressure (100 psi bubble-tight) on/off or modulating applications to be used in conjunction with pneumatic or electric actuators.
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