Central Ventilation Systems Co. L.L.C.

Sharjah, United Arab Emirates

Rectangular ducts are manufactured to meet the most stringent HVAC/Industrial specifications and quality standards. Rectangular GI Ducts are fabricated out of hot dipped galvanized steel sheet of lock forming quality as standard duct material. All types of duct accessories including flanges, raw ends and airtight clamps are also available. Duct construction as per DW144 / SMACNA / ASHRAE standards provides superior strength, low leakage rate and vibration free products. CVS Duct is fully equipped to provide customized ductwork with various materials like galvanized steel, stainless steel, aluminum and carbon steel to suit specific project requirements. Ducts will be tailor-made in size as per the requirement of the project. No limitation on duct size. Any size of duct can be constructed (3Mtr and above ducts are constructed in multi panels). Fully Welded Industrial Grade Heavy Gauge Ductwork for Commercial Kitchens, Marine and Oil & Gas Applications with various anti corrosion, abrasive handling coatings are also available. Welded systems in Carbon Steel and Stainless Steel in various thicknesses and specifications are available to meet various requirements and custom specifications.

A heavy duty round industrial control damper with a flanged style frame. Designed to control airflow and provide shut off in HVAC or industrial process control systems. A variety of optional features make it extremely versatile, allowing its capabilities to be tailored to the application.

Economy Balancing Damper #ED An ideal manual balancing damper for duct up to 18″ round

Multi-Blade Fire Damper – 1-1/2 & 3 Hour – Dynamic – 3V Blade – Optional Sleeve – Out of Wall or Round Option UL Classified for installation in walls, floors, and partitions with a fire rating of less than 3 hours. This damper may be installed horizontally or vertically in dynamic systems that continue to operate in the event of fire. (Optional 3 hr. rating)

The Model FD-SALB is UL Classified for installation in walls, floors, and partitions with a fire rating of less than 3 hours. This damper may be installed vertically or horizontally in static HVAC systems that automatically shut down in the event of fire. (See optional 3 hr. rating)

EN: Fire-rated Ductwork 4 HOURS FIRE-RATED DUCT First EN certified system in the middle-east Non-coated Light weight 4 hours integrity and stability Up to 3 hours insulation Firas accredited Fully certified to EN 1366 PART 1 fire duct, kitchen extract & pressurisation, EN 1366 PART 8 multi compartment smoke extract and EN 1366 PART 9 single compartment smoke extract Understanding the new EN regulations PYRO SAFE fire rated ductwork is produced in an ISO9001 quality control management environment, and has been developed aligning with the European Standard EN 12101-7 for smoke extract and EN 15871 for fire ductwork, kitchen extract and pressurisation. All PYRO SAFE products have been tested to the latest EN standards. PERFORMANCE CRITERIA Integrity: Complete smoke management system based on the performance of all elements from penetration seals to smoke leakage and to cross sectional area. Stability Leakage is set to different parameters for smoke extract and fire rated duct Smoke extract is tested to a maximum of 10m3/hr/m2 and a low of 5m3/hr/m2 Fire duct is tested at a higher rate to a maximum of 15m3/hr/m2 and a low of less than 10m3/hr/m2 PYRO SAFE received a classification of “S” in both tests; “S” being the highest classification in this category PYROSAFE i– up to 3 hours insulation Ductwork offers insulation of up to 3 hours at 1200⁰C. Thickness and density is calculated by the type of system and time period required Its insulation is a compact calcium magnesium silicate blanket made from low bio-persistence wool with a thickness of 38mm It has a resistance to both thermal shock and mould growth (anti-microbial) ideal for hospital applications

Combination Fire/Smoke Damper 1-1/2 & 3 Hours rated with Sleeve, 3V blade, Class I Leakage

Opposed Blade, Control, extruded Aluminum up to 3″ w.g. The Model CD-100(opposed blade) is a rectangular damper with .125 extruded aluminum blades and .081 extruded aluminum frames. This model can be built in one section up to 52″w x 72″h. If a larger size is required there will be an automatic multi-section charge for jack shafting.

The Model C-RD is a round UL Classified ceiling (radiation) damper, butterfly style, approved for steel duct, flex duct and ductless installations in approved UL ceiling designs that incorporate/show a hinged door damper requiring fire/heat protection where HVAC components penetrate the ceiling membrane. These dampers provide protection up to 18” (467mm) diameter openings.