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Ventilation System Metal Back Draught Damper
US$2.00
100-499 Pieces
US$1.60
500-999 Pieces
US$0.99
1,000+ Pieces
Sample price:US$3.00/piece.Request sample

Product profile

Customization

Available

Material

Galvanized Sheet

Usage

Industrial

Model NO.

PVA

Application

Metallurgy

Shape

Round

Performance

Temperature

Transport Package

Carton Box

Specification

100, 125, 150, 160, 200, 250mm

Trademark

Airandus

Origin

China

Production Capacity

100000PCS/Month

Key features

Galvanized Steel Construction: Casing made from durable galvanized steel for industrial use.
Aluminum Blades: Blades constructed from aluminum for lightweight performance.
Foam Seal Technology: Inner foam seal ensures better tightness and noise reduction.
Spring-Operated Closure: Closes automatically via spring mechanism when pressure drops.
Overpressure Protection: Prevents reverse air flow and opens during overpressure events.
Round Shape Design: Circular duct system compatible with round shape configuration.

Company profile

Importers and ExportersMulti-language PioneerFlexible CustomizationQA/QC Inspectors
Business Type: Manufacturer/FactoryExport Year: 2003-06-01Nearest Port: Ningbo/ShanghaiAverage Response Time: ≤1.96hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF, DDP, DAP, Others

AI-Powered supplier vetting

SummaryThe supplier is presented as a professional technical HVAC/R supplier with production lines, moulds, patents, and a complete HVAC/R product range. It reports ISO 9000 and ISO 9001 management-system certifications and states that most products hold CE, RoHS, and UL approvals. Customization is available from samples and designs, including full, minor, and flexible customization. However, the supplier does not provide 3D software design, ODM, SDK, or well-known-brand OEM services, and launched no new products in the past year. It has no overseas warehouse, showroom, agent or branch, and has not participated in offline trade shows. Service quality assurance is stated, but complaint handling and corrective-action arrangements are described only as “Others.” Financial records are referenced for 2022–2024, but no financial performance details are provided. No specific customer cases are identified.
Supplier typeThe supplier is explicitly identified as a professional technical supplier and describes a complete HVAC/R range with production lines, moulds, patents, and one-stop solutions. Its stated business scope also covers hardware, building materials, mechanical equipment, refrigeration and air-conditioning equipment, and related technical services.
CertificationsThe supplier reports ISO 9000 and ISO 9001 management-system certifications. It also states that most products are approved by CE, RoHS, and UL, although the evidence does not indicate that every product holds these approvals.
R&D capabilityThe supplier has R&D capability, patents, and states that it continues to innovate and improve technology. Conversely, it launched no new products in the past year and does not provide ODM, SDK, or 3D software design services, indicating some limitations in documented innovation-service breadth.
Production capacityThe supplier states that it owns a series of production lines and moulds and provides a complete HVAC/R product range. Its business scope includes sales of refrigeration and air-conditioning equipment and related industrial products, supporting production-related capability, although no capacity or output figures are given.
Customization capabilityThe supplier explicitly offers customization from samples and designs, as well as full, minor, and flexible customization. This supports a broad customization offering, but 3D software design is not available.

Product Q&A

Q:What is the main function of the PVA Back Draught Damper?
A:
It prevents reverse air flow in circular duct systems and opens during overpressure to relieve pressure.
Q:What materials are used for the casing and blades?
A:
The casing is made from galvanized steel, and the blades are made of aluminum.
Q:How does the damper ensure tightness and reduce noise?
A:
It features an inner foam seal that provides better tightness and reduces noise.
Q:What is the recommended installation orientation?
A:
It is recommended to install the shutter into a horizontal duct.
Q:How does the valve operate mechanically?
A:
The valve opens when overpressure occurs and closes by means of a spring when the pressure drops.

Send Inquiry

*To:NEW HVACR TECHNOLOGY (NINGBO) CO., LTD
*Content:
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