Damper Butterfly Valve
Description
Damper Butterfly VALVE
Industrial Air & Gas Flow Control Dampers | Fabricated Construction | DN 100β2000
MNC Valves is a Damper Butterfly Valve Manufacturer in India, manufacturing industrial fabricated butterfly dampers designed for air, flue gas, dust-laden gas, and low-pressure process systems.
Damper butterfly valves are primarily used for flow regulation and isolation in air handling systems, exhaust lines, boiler ducts, furnaces, and industrial ventilation systems.
MANUFACTURING STANDARDS
- Customized industrial fabrication standards
- ASME Section VIII principles (Where applicable)
- IS / DIN flange drilling standards (Where required)
- Internal quality inspection standards
- Testing is performed as per customer specification
(Note: Dampers are generally not designed to API 609 pressure ratings.)
PRODUCT DESIGN OVERVIEW
Damper butterfly valves are fabricated steel construction valves designed for low-pressure gas service.
- β’ Fabricated body (MS / SS)
- β’ Center-mounted shaft
- β’ Circular disc plate
- β’ Metal-to-metal sealing
- β’ Manual or actuated operation
This design provides:
- β Air flow regulation
- β Flue gas control
- β Dust and exhaust systems
- β Furnace and boiler systems
SIZE & PRESSURE RANGE
- Size Range: DN 50 mm to DN 1200 mm (Larger on request)
- Pressure Range: Low pressure service
- Typically suitable for air and gas systems
- Temperature: As per material selection
Damper valves are not intended for high-pressure liquid service
MATERIALS OF CONSTRUCTION
| Body Materials | Disc Materials | Shaft Materials |
|---|---|---|
| Mild Steel (MS), Carbon Steel, Stainless Steel (SS304 / SS316) | MS, SS304, SS316 | EN8, SS304, SS316 / Sealing Type, Metal-to-metal, Soft sealing (On request for specific applications) |
DESIGN FEATURES
- Fabricated heavy-duty construction
- Large diameter capability
- Low torque operation
- Manual / Gear / Actuator operation
- Lightweight compared to cast flanged valves
- Suitable for gas flow modulation
END CONNECTION
- Flanged Ends
- Wafer Style
- Welded Ends (On Request) / ANSI, DIn, IS
TESTING & QUALITY CONTROL
- Visual inspection
- Dimensional verification
- Functional operation test
- Leakage test (As per customer requirement)
Damper valves are typically not hydrotested like pressure-rated valves
OPERATING PRINCIPLE
The disc rotates 90Β° within the duct or pipeline.
- β’ 0Β° β Fully closed (Partial metal sealing)
- β’ 90Β° β Fully open
Damper valves are mainly used for flow control rather than bubble-tight shut-off.
APPLICATIONS
- Boiler Systems
- Thermal Power Plants
- Furnace Systems
- Cement Plants
- Steel Plants
- Dust Collection Systems
- Air Handling Units (AHU)
- Industrial Ventilation Systems
DAMPER VALVE VS RESILIENTSEATED BUTTERFLYVALVE
| Feature | Damper Valve | Resilient Seated Butterfly |
|---|---|---|
| Pressure Rating | Low | PN Rated |
| Media | Air / Gas | Liquid / Gas |
| Sealing | Metal-to-metal | Elastomer seat |
| Application | Flow regulation | Tight shut-off |
Damper valves are selected for gas flow systems where pressure is low and tight shut-off is not critical
AUTOMATION OPTIONS
Available with:
- β’ Manual Lever
- β’ Gear Operator
- β’ Pneumatic Actuator
- β’ Electric Actuator
Suitable for automated air flow control systems
Frequently Asked Questions
ENQUIRY DETAILS REQUIRED
To select correct valve, please provide:
- Size (DN)
- Media (Air / Gas Type)
- Operating Temperature
- Pressure
- End Connection
- Actuation Requirement
- Quantity
- Application
Our engineering team will assist in proper valve selection.
