butterfly damper valves

We Offer Butterfly Damper Valves in sizes up to 7000 mm in round shape and up to 12000 mm in Rectangular Shape and Pressure rating up to 10197 mm WC.

Butterfly damper valve has single disc connected with a shaft concentrically or with offset Design.

Our Butterfly Damper valves can be designed for Temperature up to 1250 Deg C, using our Refractory Lined Dampers. Also, these Butterfly dampers can be designed for 100% sealing efficiency i.e., zero leakage.

Type: Circular / Rectangular / Square 

Size Range: Ø 40 mm to Ø 5000 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/ As per Client Requirement.

Flowing Media: AIR/Flue gas etc.

Design Temperature: -25°C to 825°C

Pressure Ratings: PN 1

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 % Leak Proof [ Through Body and Stem] & 99.95 % 

                                  at Downstream

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:

• Dust Extraction System
• Throttling in Ventilation System
• Exhaust System
• Any process lines that need the control or isolation of Flowing media