Butterfly damper

1. Frame
2. Blade
3. Shaft
4. Blade Seal
5. Shaft Seal/ Packing
6. Bearing
7. Drive Mounting

The body of butterfly damper is fabricated from different types of material suitable for site condition and client requirement. Standard materials of construction for critical parts of butterfly damper are:
1. Body: A36, IS 2062, A516, IS 2002, Corten, SS 304, SS 316, Inconel etc.
2. Blade: A36, IS 2062, A516, IS 2002, Corten, SS 304, SS 316, Inconel etc.
3. Shaft: En8, SS 410, SS 304, SS 316, Inconel etc.
4. Seal: SS 316Ti, Inconel etc.
5. Bearing: C.I. lined Bush type with Grafoil Sheet maintenance free / antifriction
6. Shaft Packing: SS 316Ti / Braided Graphite.
Other materials of construction can be used as required by client.
SEAL
These dampers are design for sealing up to 99.9% without seal air system and 100% with seal air system. Type of seals: Omega seal / Solid seal
DRIVE
Butterfly dampers can be provided with one side or double side drives as required by client.
Type of drives:
Manual by Hand wheel/ Lever/ Chain/ Winch Pulley Arrangement
Motorized
Pneumatic

1. Frame
2. Blade
3. Shaft
4. Blade Seal
5. Shaft Seal/ Packing
6. Bearing
7. Drive Mounting

STANDARD ITEMS FOR PNEUMATIC OPERATED BUTTERFLY DAMPER
(These items are used as required by client’s technical requirements)

1. Pneumatic cylinder
2. Speed Regulator
3. Bleed Valve/ Pilot Valve
4. Solenoid Valve
5. Positioner (Pneumatic/ E-P/ SMART HART/ FF type)
6. Position Transmitter
7. Lock Valve
8. I/P Converter
9. Manual Loader
10. Loop Power Indicator
11. Volume Tank

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