Brand:TWT
Model:609A
Pneumatic butterfly valve
Characteristics,
1.Double offset construction design prevents galling of sealing joint face and maintains completeness of sealing and longer service life. 2.Wide-angle seat design prevents extrusion damage from over-tight contact between seat and disc and provides longer service life.
3.Two-section high strength stem construction ensures easy repairing;
and double offset construction makes online maintenance for seat and disc become rapid and easy. 4.Streamlined Spherical Disc with high flow capacity
5. Internal Stem/Disc Drive eliminates the need for pins or bolts which create additional leak paths.
6.Flexible retaining ring on disc provides compensatory sealing pressure for seat, not only simple in construction, light in weight, but small in driving moment, simple and rapid in operation, with better flow adjusting and
sealing capability.
6.Stem sealing is achieved by high-efficiency PTFE
Technical conditions and materials,
· Face-to-face sizes conform to EN 558-1,
· Corrosion-proof valve body elements, blue epoxy resin coating layer
· Applicable temperature: -20 centigrade to 120 centigrade
· Applicable size: DN50 to DN5500
· Valve body: cast iron/nodular cast iron
· Valve seat: austenitic chromium-nickel steel
· Valve disc: nodular cast iron/stainless steel
Any further information, you don't hestitate to contact me.




