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The lug version of the butterfly valve's design is similar to a 3-piece ball valve in that one end of the line can be taken off without having an effect on the opposing side. This can be executed by using threaded inserts, flanges, along with two sets of lugs (bolts) that don't utilize nuts since each flange features its own bolts. It's also important to note that you don't need to shut down the entire system in order to clean, inspect, repair, or replace a lug butterfly valve (you would need to with a wafer butter valve).
Butterfly Valve Applications
Butterfly valves can be used across a wide range of applications. They perform well in large volume water applications and slurry applications. The following are some typical applications of Butterfly valves:
● Cooling water, air, gases, fire protection, etc.
● Slurry and similar services
● Vacuum service
● High-pressure and high-temperature water and steam services
● Compressed Air or Gas Applications
Valve components Material specification
Components |
Material |
Body |
Cast Iron, Cast Steel, Brass, Bronze, etc. |
Disc |
Cast Iron, Cast Steel, SS, Duplex SS, Brass, Bronze, etc. |
Stem |
SS, Duplex SS, Monel, Inconel, etc. |
Seat |
EPDM, NBR, NR, VITON, PTFE, etc. |
Actuator |
Level, Handwheel, Gearbox, Electrical/Pneumatic Actuator, etc. |
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