high performance butterfly valve adopts the design of double-eccentric structure. The shaft carries out double deviation from the structural center of the body and makes the disc leave the sealing seat instantly when it is opened in conjunction with the arc sealing face design of the disc, so as to reduce the friction of the sealing face. The disc has good sealing performance during closing. In addition to realizing effective compensation for the seat seal, the central self-positioning sealing seat structure design and the unique seat compensation sealing design reduce the friction during opening and closing, greatly reduce the operating force of the valve and effectively enhance the control precision of the butterfly valve. The butterfly valve is featured by stable and reliable sealing performance, long service life, etc. It is suitable for control and shut-off applications of common corrosive gases and liquid media.
Body: Stainless Steel,CF8,CF8M,CF3M, Carbon Steel
Disc: Stainless Steel CF3M,CF3,CF8M, Double Stainless Steel,2507,1.4529
Stem: Stainless Steel
Size: 5″ – 40″ (25mm – 1000mm)
Flange accommodation: EN 1092 PN10/PN16
ASME Class 150LB,300LB,600LB
AS 4087 PN 10/ PN16/PN25/PN40
Temperature range: -40 °C to + 250 °C (depending on pressure, medium and material)
Body style: Wafer, Lug and Double Flanged
Applications: High Pressure, High Temperature, Critical Service
Shut off rating:zero leakage
Sanitary & Chemical applications
High Cv, low pressure drop
Output Torque 10Nm to 8000 Nm
Control: Double acting,Single acting normally closed, acting,Single normally open
Pneumatic accessories: Solenoid valve, limit switch box , filter, E/P positioner, hand wheel
All double acting and spring return units are suitable for both on/off and throttling applications. Actuators which can be actuated with other media such as hydraulic oil or water are also available as an option.
1, Two independently adjustable travel stop screws and a cam on the output shaft to permit precise bidirectional adjustment of movement in both the open and closed positions for quarter turn valves (+5° to -5° limit adjustment)
2, Integral porting
3, Standard units have anodized aluminum bodies with polyester coated end caps.
4, Special coatings and materials available for corrosive environments
5, NAMUR accessory compatible