Air Seal Damper Valves

We offer Air Seal Damper Valves 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. 100% sealing efficiency is achieved by injecting the pressurized seal air in the gap maintained between the Flaps. The seal air can be preheated to remove the moisture from air.

Our Air Seal Damper valves are designed for media like Corrosive, Abrasive, hazardous etc. with design temperature from -25 Deg C to 825Deg C.

We also offer complete Air Seal System which includes Seal Air inlet damper, Preheater, Seal Air Fan, Connecting bellows etc.

Air Seal Damper Valves can be offered in following types:

• Air Seal Butterfly Damper Valves
• Air Seal Diverter Damper Valves
• Air Seal Guillotine Damper Valves
• Air Seal Multi-Louver Damper Valves
• Air Seal Poppet Damper Valves
• Air Seal Twin Flap Damper Valves

Type: Circular / Rectangular / Square 

Size Range: Ø300 mm to Ø 7000 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: Air / Flue Gas  etc.

Design Temperature: -25°C to 825 °C

Seal:  EPDM, Viton, Silicon etc.

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:

• Flue Gas Desulphurization
• 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