Volume Control Dampers Services for Industrial Projects
Basic Description
Sagiant Piping Industries manufactures volume-control dampers (VCD) for HVAC supply, return and exhaust ducts — opposed-blade and parallel-blade dampers in galvanized steel, aluminium and stainless steel 304/316 with manual quadrant, gear-and-quadrant or motorised actuation. Dampers are built to AMCA 500-D and SMACNA practice with airfoil or single-skin blades, low-leakage edge and jamb seals and nylon/bronze bearings, supplied with leakage and pressure-drop data and full project documentation.
Volume-control damper types, materials, sizes and leakage reference data
Volume-control dampers for HVAC airflow balancing. Sagiant Piping Industries / SPI Steel keeps blade and actuation options, construction materials, sizes, standards and leakage data on one page for HVAC engineers and QA teams.
Technical Specification
| Parameter | Specification |
|---|---|
| Product Type | Opposed-blade & parallel-blade volume-control dampers |
| Material | GI (galvanized steel), aluminium 6063, SS 304 / 316 |
| Blade | Single-skin or airfoil; 100–150 mm wide |
| Frame | Roll-formed / extruded channel, 1.2–2.0 mm |
| Actuation | Manual quadrant, gear-quadrant, or motorised actuator |
| Seals | Blade-edge & jamb seals for low-leakage class |
| Bearings | Nylon / bronze / ball bearings with synthetic thrust washers |
| Performance | AMCA 500-D leakage & pressure-drop rated |
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 |
Damper Blade & Actuation Options
| Option | Description | Typical Use |
|---|---|---|
| Opposed-blade (OBD) | Adjacent blades rotate in opposite directions | Best flow control & balancing |
| Parallel-blade | Blades rotate in the same direction | On/off & air-mixing applications |
| Airfoil blade | Streamlined low-leakage blade | Low pressure drop & low noise |
| Manual quadrant | Hand-set locking quadrant | Balancing at duct level |
| Gear & quadrant | Geared hand operation | Large / high-pressure dampers |
| Motorised | Electric / pneumatic actuator | BMS-controlled VAV / AHU dampers |
Standards & Specifications
| Scope | Applicable Standards |
|---|---|
| Damper performance & leakage | AMCA 500-D, AMCA 511 certified ratings |
| Construction | SMACNA HVAC Duct Construction, ASHRAE |
| Material | ASTM A653 (GI), A1008 (CRCA), A240 (SS), aluminium 6063 |
| Finish / coating | Pre-galvanized, powder coat, ASTM B117 salt-spray |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| Leakage | AMCA 500-D leakage class (Class 1A / 1 / 2) test |
| Pressure drop | AMCA 500-D airflow / pressure-drop rating |
| Operation | Full open/close cycle, torque & linkage check |
| Finish | Galvanizing / DFT, ASTM B117 salt-spray |
| Inspection | Dimensional, seal & bearing check, dispatch list |
Applications & Industries Served
Available Forms, Sizes & Range
Share duct size, airflow, pressure class and actuation type (manual/motorised) for exact build.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| VCD (single section) | 100 x 100 to 1200 x 1200 mm | 1.2–2.0 mm GI | AMCA 500-D / SMACNA |
| Multi-section damper | Beyond 1200 mm in linked modules | GI / aluminium | SMACNA |
Frequently Asked Questions
What is the difference between opposed and parallel blade dampers?
Opposed-blade dampers give better, more linear flow control for balancing; parallel-blade dampers suit on/off and air-mixing duties.
How are volume-control dampers operated?
By manual locking quadrant, gear-and-quadrant for larger sizes, or electric/pneumatic actuators for BMS-controlled systems.
What leakage class can you provide?
Low-leakage construction with blade-edge and jamb seals tested to AMCA 500-D leakage classes is available on request.
Which materials are used?
Galvanized steel is standard; aluminium, powder-coated CRCA and stainless 304/316 are available for weight, hygiene or corrosion needs.
What sizes are available?
Single sections up to 1200 x 1200 mm, with larger dampers built as linked multi-section assemblies.
Scope of Work
The volume control 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