DOUBLE OFFSET BUTTERFLY DAMPER VALVES

We offer Double Offset Butterfly Damper Valves in sizes 150mm to 6000mm in round shape and Pressure rating up to PN25.

As from the name, this valve has two Offsets. This creates a cam action

during the application's process.:

1st offset: The axis of the shaft is behind the centerline of the sealing point of the disc to seat. 

2nd offset: The axis of the shaft is offset to the center of the valve body.

Our valves and designed for various flowing media like corrosive, hazardous with design temperature range from -25 Deg C to 250 Deg C.

Type: Circular / Rectangular / Square 

Size Range: Ø 150 mm to Ø 3500 mm & above

Material Of Construction:  ASTM A 36 / ASTM A 240 Type 304L / ASTM A 240 Type 316L / ASTM A 516 Gr-70 / ASTM A 387 Gr-11 / ASTM A 240 Type 310S/ A216 Gr. WCB / A351 Gr. CF8 / A351 Gr, CF8M  /As per Client Requirement.

Flowing Media: Steam / Hot Air / Gas / Water etc.

Design Temperature: -25°C to 250 °C

Seal:  EPDM, Viton, Silicon etc.

Pressure Ratings: PN1 / PN2.5 / PN6 / PN10 / PN16 / PN20 / PN25 / Class150 / Class 300

End Connection: Wafer / Double Flanged (Short/Long Pattern) and 

                                Butt Weld End

Face to Face: API 609 / ASME B16.10 / ISO 5752 / BS EN 558 / Mfg. STD

Flange Drilling: ASME B16.5 / ASME B16.47 / BS EN 1092-1/ Mfg. STD.

Butt Weld Ends: ASME B16.25

Testing: AMCA 511 / ASME AG-1 / ANSI FCI 70-2 / Mfg. STD

Sealing Efficiency: 100% Sealing to Downstream & Atmosphere    

Drive Mode: Manual / Motorized / Pneumatic / Hydraulic etc.

Design Codes and Standards: ASME B16.34 / ASME AG-1 / ERDA 76-21 /                         

                                                        API 609 / ASME SEC VIII; SEC V; SEC IX

SALIENT FEATURES:

• Bi-directional
• Spark Proof
• Low pressure drops
• 100% sealing to Atmosphere
• Lower Torque, Economical, Longer Life
• Lighter and Stronger Construction
• Maintenance-free Bearings
• Disc and Seal easily Replaceable.
• Anti-Blowout
• Seismic Qualified Design

APPLICATIONS:

• Water and Waste water treatment
• Scrubber & SCR System
• RTO System
• Any process lines that need the control or isolation of Flowing media

APPLICATION INDUSTRIES:

• Power plants
• Marine
• Steel 
• Paper & Pulp
• Textiles
• Sugar & Ethanol
• Water & Wastewater Treatment
• Cement
• Fertilizers
• HVAC
• Food & Beverages
• Pharma

Butterfly damper valves