Severn's product development manager, Mark Breese, originally challenged the Severn Leeds research and development team to reinvent
butterfly valves to help achieve differentiation and increase market share.
What are the key factors driving the global
butterfly valve market?
As mentioned above, we chose three performance quantities such as pressure drop, maximum stress, and mass (weight) as the responses for the optimization of the
butterfly valve. Next we also select three dimensions regarding the disc shape as the design variables, which are expected to significantly influence the valve performance or the responses.
The spring and cylinder extend, moving the metal lever and causing the
butterfly valve to close.
The review stage in the first step takes into account the complexity of the
butterfly valve and the adequacy of analytical techniques to properly predict its safe operation during seismic excitation.
In large diameters (over 2"), what is the difference between ball and
butterfly valves?
Replacing only the sleeve means a fraction of the maintenance cost compared with a
butterfly valve.
The T-smart
butterfly valve range can also be fitted with the company's T.VIS[R] intelligent control module which has an IP66 protection class or the T.VIS[R] P-20 positioner.
* Pneumatic
Butterfly Valve packages include the Series 79 1-1/2" to 6" glass-filled polyamide air-to-air or air-to-spring pneumatic actuators, and aluminum actuators at 8".
Each 'Sputnik' was fitted with a
butterfly valve, and because the outlets are close to the gr ound, breakages were occurring because of the temptation for operators to open and close the valves with their feet.
Some of the latest large-scale applications of the ControHeat include an 18-inch Fisher metal-seated
butterfly valve and 42-inch-diameter Fisher
butterfly valve, for the Fisher Controls Group in North Stonington, Conn., a 23-inch Ingersoll-Dresser pump, and a 60-inch Buffalo centrifugal blower.