文档介绍：feature butterfly valves
New developments in triple-
offset butterfly valves
Fluid control plays a key role in keeping the wheels of the modern day industry in
motion. Hardev Singh Phull, engineering group leader at Dunlop Aerospace Fluid
Dynamics discusses the contribution that a new generation of triple-offset butterfly
valves can make to fluid control.
uelled with an increased demand Triple offset concept pressure range and ply with the
for automated systems offering failure case requirements.
Fsuperior flexibility and higher The challenge often encountered at
levels of safety, the dependence on the design phase of a typical butterfly In practice, the interrelationship
efficient and reliable ancillary valve is how to operate the unit with between the three offsets is normally
equipment, such as valves, has never minimal torque from the actuator dependent on the size of the valve and
been greater. The humble ‘butterfly whilst enabling effective fluid sealing. can be critical to safeguard against
valve’, which essentially utilises a disc Dunlop Aerospace Fluid Dynamics has possible seizure, or poor sealing, at the
element suspended inside a tubular addressed these issues by making use of seat interface during valve operation.
housing to form the desired obstruction the ‘triple-offset’ concept. Although Although it is possible to ascertain the