Hangguo:Your Professional Damper Manufacturer!
Hangzhou Hangguo General Equipment Co., Ltd. has been established since December, 2000. As a subsidiary of XIZI Clean Energy Equipment Manufacturing Co,.tld.(Stock code:002534)the Company specializes in the design and manufacture of auxiliary engine and heavy duty equipment for boilers. The company has produced 115 sets of flue gas bypass systems and 152 sets of flue gas baffle doors, covering all continents in the world.
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Butterfly Type Main Stack DamperThe driving mechanism of Main Stack Damper is driven by electric actuator, and the opening speed is 50 ~ 60S/ time, which makes the opening work stable and reliable.read more
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Diverter Damper Control System in CabinetThe material of the cabinet is optional. According to the requirements and the site environment, the cabinet can be designed with carbon steel or stainless steel.read more
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Guillotine Damper in HRSGGuillotine damper comprise of hang steel structure, drive system (electric hoist), blade plate, duct and roof door of duct. It is installed behind the diverter damper and front of non-metallicread more
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Diverter Damper with High Sealing PerformanceThe pressure of this volume of seal air is designed to be 500pa higher than the pressure within the exhaust gas, preventing exhaust gas from passing by the blade, and providing a 100% isolation ofread more
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Diverter Damper for Single CycleThe diverter damper is a change valve with one entrance and two exits; the designed diverter damper is installed horizontally, which can facilitate the flue gas to flow into the HRSG horizontally orread more
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Main Stack Damper For HRSGThe driving mechanism of Main Stack Damper is driven by electric actuator, and the opening speed is 50 ~ 60S/ time, which makes the opening work stable and reliable.read more
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Main Stack Damper By Electric ActuatorThe driving mechanism of Main Stack Damper is driven by electric actuator, and the opening speed is 50 ~ 60S/ time, which makes the opening work stable and reliable.read more
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Butterfly Type Main Stack Damper By Electric ActuatorThe driving mechanism of Main Stack Damper is driven by electric actuator, and the opening speed is 50 ~ 60S/ time, which makes the opening work stable and reliable.read more
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Duct Diverter Damper Guillotine DamperThe bypass system comprises of Inlet duct, Diverter damper, Guillotine damper, Gas silencer, non-metallic expansion joint at the side of the bypass stack, Bypass steel structure, Bypass stack, andread more
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Duct Diverter Damper CustomThe bypass system comprises of Inlet duct, Diverter damper, Guillotine damper, Gas silencer, non-metallic expansion joint at the side of the bypass stack, Bypass steel structure, Bypass stack, andread more
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OEM Diverter Damper IndustryThe diverter damper is a change valve with one entrance and two exits; the designed diverter damper is installed horizontally, which can facilitate the flue gas to flow into the HRSG horizontally orread more
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Diverter Damper IndustryThe diverter damper is a change valve with one entrance and two exits; the designed diverter damper is installed horizontally, which can facilitate the flue gas to flow into the HRSG horizontally orread more
Why Choose Us
Rich Experience
Hangguo has been developing, designing and manufacturing bypass systems for more than 20 years, the bypass systems of T130, FT8,5B, 6B, 6FA, 9E, 7FA, V94.2, SGT5-4000F, SGT5-5000F, 9F, 9HA, Sgt5-8000h and M701J have been successfully developed, designed and manufactured.
Our Products
Our products cover GE, Siemens, MHI,Ansaldobreda and other major gas engine suppliers of various main power generation, models, the company supplies 126 sets of gas engine bypass system, among them, 48 sets of 9F and above gas turbine bypass chimney supply performance.
High Quality
Our company has established a sound quality management system and passed the approval of ISO9000, ISO14000 and OHSAS18001 China quality certification center. The company has been awarded the title of "advanced enterprise of social responsibility" by hangzhou municipal people's government, and is the cultivation enterprise of hidden champion in yuhang district.
Advanced Equipment
Our company has advanced machining equipment, including CNC gantry cutting machine, horizontal 8-meter lathe, gantry planer, boring machine, hydraulic bending machine, automatic welding machine, CNC machining center and other advanced equipment, capable of processing various parts. In addition, it also has a large number of processing equipment such as lathe, milling, planing, grinding, boring, slotting machine, etc., which can meet the processing needs of various parts, as well as key equipment and facilities such as large shot blasting room and paint spraying room.

Advantages of Damper
Flow Control
Dampers can be adjusted to control the rate of flow of gases or air in a system. This is particularly important in processes where precise control over the flow is necessary for optimal performance.
Pressure Regulation
Dampers help regulate the pressure within a duct or pipeline by adjusting the cross-sectional area through which the fluid passes. This can therefore be crucial in maintaining a stable and controlled pressure in various industrial processes.
Temperature Regulation
In certain applications, dampers are used to control the temperature of the fluid by adjusting the flow. Accordingly, this is common in systems where maintaining a specific temperature is critical for operational efficiency or product quality.
Isolation
Dampers can act as isolation devices, shutting off the flow completely when needed. This is useful during maintenance or in emergency situations to isolate sections of a system.
Noise Control
Dampers can also be employed to mitigate noise generated by the flow of gases within a system. By adjusting the damper settings it can be possible to reduce the noise level in industrial environments.
Application of Damper
HVAC Systems:
Dampers regulate airflow in ductwork, ensuring proper temperature and humidity control.
Industrial Processes:
Dampers control the flow of gases, air, and other fluids in industrial processes, including power generation and manufacturing.
Fire Protection:
Fire dampers prevent the spread of fire and smoke by closing off ductwork during a fire event.
Structural Engineering
Dampers, such as tuned mass dampers (TMDs) and viscous dampers, are used in buildings and bridges to reduce vibrations caused by wind, earthquakes, and other factors.
Everyday Objects
Dampers are used in various everyday objects, including printers, electric drills, and laboratory instruments, to control movement, reduce vibration, and provide a smooth operation.
Automotive
Dampers are used in automotive powertrains to reduce torsional vibrations and improve engine performance.
Power Transmission Lines
Dampers are used in high-tension power lines to reduce flutter and other oscillations.
Technical Parameters
|
No |
Item |
Data |
|
1 |
DIVERTER DAMPER |
Size: 3050 X 3050Carbon Steel: 8,311kgs |
|
2 |
DUCTING |
Carbon Steel: 4,477 kgs |
|
3 |
EXPANSION JOINTS |
Carbon Steel: 835 kgs |
|
4 |
GUILLOTINE DAMPER |
Carbon Steel: 5,022kgs |
Types of Damper
Diverter Damper
Diverter dampers are essential components used to redirect airflow within a system. As the name suggests, a diverter damper allows the flow of air to be redirected from one duct to another. This type of damper is commonly used in applications where multiple air paths are needed, such as in HVAC systems or industrial processes.
Guillotine Damper
The guillotine damper is a unique type of damper known for its precision and reliability. This damper features a blade that moves vertically to open or close the airflow path. It is called a guillotine damper because the blade resembles the historical guillotine.
Butterfly Damper
Butterfly dampers are named for their distinctive design, which resembles the wings of a butterfly. This type of damper uses a rotating disc or blade to control airflow. When the disc is parallel to the duct, it allows air to pass through freely. When it is perpendicular, it blocks the airflow.
Components of Damper
Frames
The frame is the metal perimeter of the damper. Square and rectangular dampers will have frame with four sides. The left and right side of the frame are referred to as the jambs. Jambs will have holes at set points for the damper’s blade axles. They can also contain the linkage assembly for the damper. Frame members can have one of three shapes: channel, hat, and round.
Blades
Blades are the long metal pieces inside the frame. Blades come in different shapes to serve different purposes. The blade’s main function is to regulate airflow through the damper. Damper blades will rotate along their axles, also known as shafts, to close off the damper or open it up.
Axles
Axles are lengths of metal used to rotate the blade. Axles can run through the center of the blade or along one edge of the blade for backdraft blades. Wherever it is located, the axle is fixed within the blade so that the blade will rotate with the axle. Blade axles run through the jambs of the damper and are secured to the jambs with bearings. The ends of the axles will be capped or tied to an in-jamb linkage assembly.
Linkage
Linkage refers to the series of connectors that translate the rotation of a driving axle to every axle on the damper. Linkage can be installed on the face of the damper’s blades or within the damper’s jambs. On-face linkage will remain in the airstream when the damper is open.
Actuators
Actuators are not a standard part of a damper, but they are commonly added to dampers to facilitate blade rotation. There are three types of actuators: electric actuators that employ an electric motor, pneumatic actuators that use pressurized bladders, and manual actuators that must be operated by hand.
Transitions
Transition collars allow dampers to be installed in ductwork of different shapes. For instance, a round transition will allow a square damper to be installed in a circular duct.
Packaging and Shipping

Our Certificates

FAQ
We're professional damper manufacturers and suppliers in China for over 20 years, featured by good service and competitive price. We warmly welcome you to buy high quality damper made in China here from our factory.
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