Butterfly Valves
Butterfly valves are valves with a circular body and a rotary motion disk closure member which is pivotally supported by its stem. A butterfly valve can appear in various styles, including eccentric and high-performance valves.
Butterfly Valve Installation Tips
Always follow standard safety procedures when working on a valve.
Butterfly valves should be installed with the valve shaft horizontal or inclined from vertical.
The valve should be mounted in the preferred direction, with the "HP" marking.
Thermal insulation of the valve body is recommended for operating temperatures above 392°F (200°C).
The valve should be installed in the closed position to ensure that the laminated seal in the disc is not damaged during installation.
If the pipe is lined, make sure that the valve disc does not contact the pipe lining during the opening stroke. Contact with lining can damage the valve disc.
third party automationVelan recommends detailed procedures when automating Velan Butterfly valves in the field. Please consult Velan for these procedures.