Smoke Dampers Services for Industrial Projects
Basic Description
Sagiant Piping Industries supplies smoke dampers and combination fire/smoke dampers for smoke-control, pressurisation and HVAC systems — low-leakage multi-blade dampers in galvanized steel with stainless options, driven by electric or pneumatic actuators with spring return. Smoke dampers are built and tested to UL 555S and BS EN 1366-2/-10 with leakage Class I/II/III, airfoil blades, silicone/stainless edge seals and elevated-temperature rating (250°F/350°F), supplied with actuators, end switches and full project documentation.
Smoke damper types, materials, sizes and leakage / temperature reference data
Smoke dampers for smoke-control, zone-isolation and pressurisation systems. Sagiant Piping Industries / SPI Steel keeps damper types, construction materials, sizes, standards and leakage/temperature data on one page for HVAC and life-safety teams.
Technical Specification
| Parameter | Specification |
|---|---|
| Product Type | Multi-blade smoke dampers & combination fire / smoke dampers |
| Material | Galvanized steel (GI), SS 304 / 316 options |
| Leakage Class | UL 555S Class I / II / III low leakage |
| Temperature Rating | 250°F / 350°F (121°C / 177°C) elevated rating |
| Actuation | Electric or pneumatic actuator with spring return |
| Blade / Seal | Airfoil blades, silicone / stainless jamb & edge seals |
| Control | End switches, BMS interface, smoke-detector release |
| Standards | UL 555S, EN 1366-2 / -10, AMCA 550 |
Construction Materials
| Material | Grade / Spec | Typical Use | Finish |
|---|---|---|---|
| Galvanized steel (GI) | IS 277 / ASTM A653, Z180–Z275 | Frame & blades (standard) | Pre-galvanized |
| Cold-rolled steel (CRCA) | IS 513 / ASTM A1008 | Frames, linkage parts | Powder coated |
| Extruded aluminium | 6063-T5 | Light-weight blades & frame | Mill / anodized |
| Stainless steel | 304 / 316 (ASTM A240) | Cleanroom, kitchen-exhaust, corrosive | 2B / brushed |
Smoke Damper Types
| Type | Description | Typical Use |
|---|---|---|
| Smoke damper | Low-leakage multi-blade + actuator | Smoke-control & pressurisation zones |
| Combination fire / smoke | UL 555 + UL 555S rated | Penetrations needing fire & smoke control |
| Corridor / stair pressurisation | Modulating actuator | Staircase & lobby pressurisation systems |
| Round smoke damper | Blade pack in spigot frame | Circular smoke-control ducts |
Standards & Specifications
| Scope | Applicable Standards |
|---|---|
| Smoke / leakage | UL 555S, BS EN 1366-2 / -10, AMCA 550 |
| Classification | EN 13501-3 / -4 (E / S rating) |
| System design | NFPA 92, SMACNA, project specification |
| Material | ASTM A653 (GI), ASTM A240 (SS) |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| Leakage | UL 555S Class I / II / III leakage test at temperature |
| Temperature | Elevated-temperature operation (250°F / 350°F) |
| Actuation | Actuator close/open, spring-return & end-switch test |
| Dimensional | Frame, blade & seal check |
| Documentation | UL 555S certificate, actuator data, wiring diagram |
Applications & Industries Served
Available Forms, Sizes & Range
Share duct size, leakage class, temperature rating and actuator/control type for exact build.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| Rectangular smoke damper | 150 x 150 to 1200 x 1200 mm (modular) | 1.2–1.6 mm GI | UL 555S / EN 1366-10 |
| Round smoke damper | 100–630 mm dia | GI | UL 555S |
Frequently Asked Questions
What leakage class do smoke dampers meet?
Smoke dampers are built to UL 555S low-leakage Class I, II or III as specified, verified at ambient and elevated temperature.
How are smoke dampers operated?
By electric or pneumatic actuators with spring return, controlled by smoke detectors, the fire-alarm panel or the BMS, with end switches for position feedback.
What temperature rating is available?
Standard elevated-temperature ratings are 250°F and 350°F (121°C / 177°C) per UL 555S.
Do you supply combination fire/smoke dampers?
Yes — dampers rated to both UL 555 and UL 555S control fire and smoke through a single actuated unit.
Where are smoke dampers used?
In smoke-control, zone-isolation and staircase/lobby pressurisation systems, and at duct penetrations of smoke barriers.
Scope of Work
The smoke dampers scope can include project review, fabrication support, dimensional coordination, inspection documentation and dispatch support for industrial installations.
Applications
For related project work, review Custom Fabrication, Contact Sales or for technical assistance.
Types of Products
| Type | Description |
|---|---|
| Fabricated Assemblies | Built as per drawing and site requirement |
| Sheet Metal Products | Doors, dampers, diffusers and HVAC items |
| Tanks / Skids | Prefabricated tanks and supporting assemblies |
| Custom Items | Project-specific metal fabrication |
Available Forms
Related Pages
From requirement to dispatch
A drawing-led, inspection-backed process for engineered and fabricated supply — the same discipline on every project.
- 01
Requirement Review
Drawing, BOQ, specification and project scope reviewed to confirm feasibility.
- 02
Design & Specification
Material, method, tolerance and finish aligned to the applicable standard.
- 03
Fabrication Planning
Production planned with inspection and test points built into the sequence.
- 04
Inspection & QA
Dimensional and visual inspection against drawing, with documentation as required.
- 05
Packing & Dispatch
Tagging, packing and dispatch documentation for on-time project delivery.
Frequently Asked Questions
What materials does Sagiant Piping Industries supply?
Sagiant Piping Industries can supply stainless steel, carbon steel, alloy steel, duplex, super duplex and nickel alloy products subject to project requirement.
Do you provide MTC and test certificates?
MTC, test certificates, heat number traceability and inspection documents can be coordinated based on the material, standard and project scope.
Can Sagiant supply as per project BOQ?
Yes. The team can review BOQs, line lists, drawings and specifications to support pipes, fittings, flanges, fasteners and fabricated items.
Do you support third-party inspection?
Third-party inspection, PMI and dimensional inspection support can be arranged when required by the enquiry or project documentation.
Can you work from drawings or site requirements?
Engineering and fabrication enquiries can be reviewed from drawings, BOQs, approved samples or project specifications.
Do you provide custom fabrication services for industrial projects?
Custom fabrication support is available for industrial assemblies, tanks, duct accessories, clean room items and project-specific metal works.
A controlled path from requirement to delivery support
A technical RFQ flow built for engineers, QA teams and project buyers who need clear standards, traceability and dispatch documentation.
Requirement Submission
Share product, grade, size, class, quantity, drawing and delivery location.
Technical Review
Review standards, specifications, missing inputs and service conditions.
Material Selection
Align stainless, carbon, alloy, duplex, titanium or nickel alloy grades.
Quotation & Approval
Confirm commercial scope, documents, inspection needs and timelines.
Production / Sourcing
Coordinate manufacturing, stock sourcing or fabrication as per scope.
Quality Inspection
Manage dimensional checks, MTC review, PMI or third-party inspection.
Dispatch & Documentation
Prepare packing, tagging, test certificates and dispatch documents.
Delivery Support
Support delivery coordination, document handover and project closure.
Find the right product path
Choose what you need and jump directly to the correct product, material or engineering section.
304/L, 316/L, 321, 347 and 904L for corrosion-resistant piping, fittings, flanges and fabrication.
View stainless steelASTM A106, A53, A105, API 5L and IS 2062 for pressure, utility and structural supply.
View carbon steelUNS S31803, S32205, S32750 and S32760 for chloride, offshore and desalination service.
View duplex gradesInconel, Monel, Hastelloy, Incoloy and Nickel 200/201 for severe corrosion and heat service.
View nickel alloys