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HVAC CONTROL DAMPERS

1. VOLUME CONTROL DAMPERS

Standard duty flanged style frame dampers, available with various blade types and controls. Designed to be used in central air conditioning system to either cut off or regulate flow.

3-v blade type
3-v blade type

3-V BLADE TYPE

These dampers consist of multiple 3-V blades fabricated in C type 6 in. (150 mm) deep frame having duct suitable flange of 25/40 mm with opposed blade linkage drive. The fabricated blades are reinforced with 3-longitudinal structurally designed vee's. 3-V blades and C type frame are made out of 16(1.5), 18(1.2), or 20(1.0) ga.(mm) galvanised steel.

• Motorised 3V Damper : includes extended shaft for motorised assembly with wide range of electric and pneumatic actuators to choose from. These dampers are suited for applications such as automatic control in low to medium pressure system i.e. temperature control with zone thermostat etc.

• Manual 3V Damper : includes manual hand quadrant consisting of a PVC knob, position lock and position indicator for manual balancing or control. Typically used in a low to medium pressure system.

• Face and Bypass 3V Damper : includes face and bypass sections, assembled either horizontally or vertically. Blades in face section are interconnected with those in bypass section for simultaneous function, typically causing one section to be closed while other to be open at the same time.

Available as motorised or manual 3V blade type, these dampers are suited for application as automatic or manual control in low to medium pressure system.

Motorised Round Damper
Manual Round Damper

ROUND BLADE TYPE

These dampers consists of single fabricated round blade with blade seal in round 6 in. (150 mm) deep round frame having bends at both ends for round duct connection. The round ducts present lower resistance to airflow and hence save energy.

Round blades and the casing are made out of 16(1.5), 18(1.2), or 20(1.0) ga.(mm) galvanised steel sheet.

Motorised Round Damper : It includes extended shaft for motorised assembly with wide range of electric and pneumatic actuators.

Suitable for application in low to medium pressure and velocity systems with blade seals for low leakage applications. i.e. temperature control with zone thermostat, or pressure relief with pressure switch etc.

Manual Round Damper : includes manual hand quadrant with PVC knob, position lock and position indicator for manual balancing or control in low to medium pressure and velocity systems with blade seals for low leakage applications.

Motorised Airfoil Damper
Face and Bypass Airfoil Damper

AEROFOIL BLADE TYPE

These dampers consist of multiple heavy gauge extruded aluminium airfoil blades in C 4.5 in.(115 mm) deep frame having duct suitable flange of 25 mm with exposed gear drive, EPDM blade seal. The double skin airfoil presents lower resistance to airflow and adds strength to the blades.

C type frame is either made out of Heavy gauge extruded aluminium or 16(1.5), 18(1.2), or 20(1.0) ga.(mm) galvanised steel sheet.

• Motorised Airfoil Damper : includes extended shaft for motorised assembly and wide range of electric and pneumatic actuators to choose from.

Suitable for application as automatic control in high pressure and velocity systems with blade seals for low leakage applications. i.e. temperature control with zone thermostat, or pressure relief with pressure switch etc.

• Manual Airfoil Damper : includes manual hand quadrant with PVC knob, position lock and position indicator for manual balancing or control in high pressure and velocity systems with blade seals for low leakage applications.

• Face and Bypass Airfoil Damper : includes face and bypass section, assembled either horizontally or vertically. Blades in face section are interconnected with those in bypass section for simultaneous function, typically causing one section to be closed while other to be open at the same time.

These dampers are available as motorised or manual 3V blade type face and bypass damper suitable for application as automatic or manual control in low to medium pressure system.

2. BACK DRAFT DAMPERS

Used in ventilation systems to allow airflow in one direction and restrict airflow in the other direction. Standard duty flanged style frame dampers, available with various blade types to suit every backdraft application in building ventilation systems.

3-V Backdraft Exhaust Damper

3-V BLADE TYPE

These dampers consist of multiple fabricated off-centre 3-V blades in C type 4 in.(100 mm) deep frame having duct suitable flange of 25/40 mm with parallel blade linkage drive. The fabricated blades are reinforced with 3 longitudinal offcentre structurally designed vee's.

3-V blades are made out of 22(0.8) ga.(mm) galvanised steel sheet while C type frame is made out of 18(1.2) ga.(mm) galvanised steel sheet.

• 3-V Backdraft Exhaust Damper: designed to allow exhaust airflow but prevent airflow in reverse direction.

Typically used in application as exhaust backdraft damper in ventilation system even at high pressure and velocity.

• 3-V Backdraft Intake Damper: designed to allow supply airflow but prevent airflow in reverse direction.

Typically used in application as intake backdraft damper in ventilation system even at high pressure and velocity.

Extruded Backdraft Exhaust Damper

EXTRUDED BLADE TYPE

These damper consists of multiple heavy gauge extruded aluminium blades in C type 4.5 in. (115 mm) deep extruded aluminium frame having duct suitable flange of 25 mm.

The extruded blades and frame are structurally reinforced to present strength.

• Extruded Backdraft Exhaust Damper: designed to allow exhaust airflow but prevent airflow in reverse direction.

Typically used in application as exhaust backdraft damper in ventilation system even at high pressure and velocity.

• Extruded Backdraft Intake Damper: designed to allow supply airflow but prevent airflow in reverse direction.

Typically used in application as intake backdraft damper in ventilation system even at high pressure and velocity.

Pressure Relief Dampers

3. PRESSURE RELIEF DAMPERS

A pressure relief damper is developed with an elevated and adjustable start open pressure while providing the backdraft function. Standard duty flanged style frame dampers, available with various actuation types to suit every application for pressure relief in building ventilation systems.

MANUAL

It includes backdraft dampers with balancing weight to provide necessary pressure relief function. They are suitable for medium leakage application.

Pressure Relief Dampers

MOTORISED

It includes motorised damper with non spring return electric actuator and adjustable differential pressure switch with necessary control and accessories to provide pressure relief function. They are suitable for low leakage applications and offer low resistance to flow.



Manual Geared Quadrant

4. ACTUATOR OPTIONS


MANUAL GEARED QUADRANT

These are used for manual balancing of the airflow by lever and gear arrangement in high pressure and velocity systems. This type of actuators are mounted on the dampers externally.

Pnuematic Control

PNUEMATIC CONTROL

These actuators are used in HVAC systems where pneumatic controls are preferred

Internal Manual Knob

INTERNAL MANUAL KNOB

For manual balancing of volume control damper from inside

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