Waterman Overview- Butterfly valves are used in many different applications. They are chosen for their compact design and linear flow characteristics. They come in wafer, lug, and flanged ends with 125/150 lbs. and 250/300 lbs. and/or mechanical joint. Actuation- Application-
Butterfly valves can be operated by a lever for smaller valves or gears for larger sizes. All Butterfly valves can additionally have automatic gears by use of electric, pneumatic or hydraulic power.
Butterfly valves can be used above ground or buried service (certain design types) applications. They have a low head-loss and commonly used to throttle or modulate. On distribution water lines they are the valve of choice 12″ and larger.