NIBCO ductile iron butterfly valves feature a unique molded-in EPDM seat liner with a ductile iron disc that is recommended for most water applications. The valve body fully supports the molded-in liner at the flange seals and eliminates leakage between the body and liner, which can happen in a cartridge or boot-type liners. It provides dead-end service without the need for a flange on the downstream side. The internal stem/disc geometric drive design eliminates the need for pins or bolts that may create leak paths or turbulence in the waterway.
NIBCO ductile iron butterfly valves are available in sizes ranging from 2" to 48" depending on the model. Multiple handle operation mechanisms are also available, including bare shaft, lever-lock flow control handle, worm gear operator, or electric and pneumatic actuators.
Flanged ductile iron butterfly valves from NIBCO dimensionally replace a gate valve, ball valve, plug valve, and spooled butterfly valve.