Flexible seat butterfly valve

Flexible seat butterfly valve
Features
• The clip and the ear-type valve body design, suitable structure length size.
• Designed to comply with EN 593 and API 609.
• The valve seat can be replaced and completely over-flowed to the body and stem quality isolation.
• The first stage stem sealing force exceeds the valve's rated pressure, sanitary valves can effectively prevent over-flow medium leakage through the stem part of the outside department of the environment.
• Second stage stem seal as a backup seal for added safety.
• Molded O-rings on both ends of the sanitary butterfly valve seat to replace seals
The pad is sealed as a flange.

• Stem seal prevents moisture from penetrating the stem area.
• The double valve stem makes the thin valve plate design to play its low flow resistance characteristic.
• Round polished valve plate edge ensures complete concentricity of the valve
Sealing, lower torque, longer seat life and air bubbles.
• Valve body positioning holes are easy to install and suitable for centering between flanges.
• Extended body neck for pipe insulation.
• The upper and lower stem bearings provide good support and minimal friction
The wiping ensures low valve torque.
• The top bushing absorbs the axial thrust load on the actuator side.
• All valves are in accordance with the Pressure Equipment Directive.
• Approved: NSF / ASME Std 61, ACS, KIWA, WRAS, DVGW-G, ABS, CU-TR.

 
Technical data
Pressure (bar): 16 bar DN 50-300
10bar DN 350-900
Pipe end bar: 10 bar DN 50-300
6bar DN 350-900
Vacuum application (bar): 0.4 bar
Temperature (° C): -40 to +160
Dimensions (DN): 50-900
Flange standard: PN 6/10/16
ASME 125/150
JIS 10K
BS Table E
AS4087 PN 16
AS2129 Table E
 
General application
It is widely used in water, air, bulk dry material transmission. It is suitable for all needs of gas
Bubble seal and maximum flow area requirements.