Regulation butterfly valves
Butterfly valve is one of the types of valves positive shut-off quarter-turn valve. The regulating butterfly valves are majorly used in utility services such as air, gas, steam, or liquid because of two reasons: this type of butterfly valves is lower in cost and also lighter in weight. The regulating butterfly valves are available in variety of design depending on the service and the pressure-temperature rating.
These butterfly valves can also be used for vacuum service. Whenever used for cryogenic service, the butterfly valve shall be provided with extended shaft to clear the insulation.