Products Air Dampers

Product Code: CEI-ID / ID-GI / ID-AL

Inertia Dampers

صمامات عزل الاهتزاز

Pressure relief, counter-balance and back-draft configurations for different system requirements. Gravity-operated with no power requirement. Available as CID-PR, CID-CB and CID-BD models.

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ISO 9001:2015SMACNADW144
Description

Product Description

Castle Inertia Dampers (Counterbalancing Dampers) automatically balance airflow in different sections of the ductwork using counterweights or springs. They modulate blade position based on air pressure, maintaining consistent airflow distribution without manual adjustment. Essential for systems with variable fan speeds or multiple branch takeoffs.

Self-Regulating
Counterweight mechanism automatically adjusts blade position — no manual intervention or power required.
Fail-Safe
Gravity closes blades when airflow stops — prevents reverse airflow and backdraft.
Low Maintenance
No motors, actuators or electrical connections — purely mechanical operation.
Adjustable Sensitivity
Counterweight position adjustable to fine-tune opening pressure threshold.
ISO 9001:2015 Certified
Quality management system certified by IGC, covering all stages from raw material to final delivery.
SMACNA & DW144 Compliant
Manufactured to the latest edition of SMACNA HVAC Duct Construction Standards and DW144.
Custom Sizes Available
Non-standard dimensions manufactured to project specifications with competitive lead times.
Approved by Leading Consultants
Accepted by Dar Al-Handasa, ECG, SYSTRA, Khatib & Alami and 25+ major engineering consultants.
Specifications

Technical Specifications

ParameterValueUnit
Frame MaterialGalvanized steel 1.2mm / Aluminium option
Blade MaterialAluminium sheet — single skin or GI option
CounterbalanceAdjustable counterweights on external arm
OperationGravity-operated — opens with airflow, closes when fan stops
Blade TypeSingle blade / Multi-blade parallel
Frame Depth100mm / 125mmmm
Standard Sizes150×150 to 1200×1200mmmm
MountingWall mounted / Duct mounted — flush or exposed
Material OptionsGalvanized Steel (GI) / Stainless Steel (SS) / Aluminium (AL)
FinishMill finish / Powder coated per RAL code
ComplianceSMACNA / ASHRAE
Applications

Fields of Application

Kitchen exhaust systems
Ventilation shaft outlets
Generator room exhaust
Multi-branch duct balancing
Industrial exhaust systems
Parking garage ventilation
Quality Assurance

Tests & Certificates

ISO Certification

International Quality Certifications

ISO 9001:2015
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ISO 9001:2015
ISO 14001:2015
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ISO 14001:2015
OHSAS 18001
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OHSAS 18001

International Standards

SMACNA · DW144 · IGC · UL

SMACNA
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SMACNA
DW144
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DW144
IGC
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IGC
UL
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UL

Duct Test

Rigorous leakage and pressure testing to SMACNA and DW144 standards.

Duct Test 1
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Duct Test 01
Duct Test 2
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Duct Test 02
Duct Test 3
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Duct Test 03

Air Tests

Air velocity and distribution testing.

Air Test 1
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Air Test 01
Air Test 2
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Air Test 02
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