What is the recommended installation direction?

It is recommended to install the shutter into horizontal ducts.

High Quality Galvanized Steel Round PVA Back Draft Damper HVAC Air Ventilation Volume Control One Way Shutter for Duct

Name: High Quality Galvanized Steel Round PVA Back Draft Damper HVAC Air Ventilation Volume Control One Way Shutter for Duct
Brand: NEW HVACR TECHNOLOGY (NINGBO) CO., LTD
SKU: 1915888861

Zhejiang, ChinaNEW HVACR TECHNOLOGY (NINGBO) CO., LTD

US$1.85-2.20

500 Pieces

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Usage

for Air Conditioner

Model NO.

PVA

Type

Round Diffuser

Venetian-Style Air Layers

Single

Installation

Outlet

Certification

Factory Standard

Surface Finish

Galvanization

Use

Preventing The Reverse of Air-Flow in Circular Duc

Shape

Round

Performance

Low Noise

Thickness

0.8mm

Function

Air Duct

Transport Package

Standard Carton

Specification

from 100mm to 400mm

Trademark

Airandus

Origin

China

HS Code

7616999000

Key features

Galvanized Steel Construction: Casing made from durable galvanized steel for long-lasting performance.

Effective Airflow Control: Prevents reverse air-flow in circular ducts with reliable spring closure.

Low Noise Operation: Features inner foam seal for better tightness and noise reduction.

Wide Size Range: Available in sizes from 100mm to 500mm diameter to fit various ducts.

Aluminum Blades: Blades constructed from aluminum for lightweight and corrosion resistance.

Horizontal Installation: Recommended for installation into horizontal ducts for optimal function.

Company profile

Importers and ExportersMulti-language PioneerFlexible CustomizationQA/QC Inspectors

NEW HVACR TECHNOLOGY (NINGBO) CO., LTD

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2003-06-01Nearest Port: Ningbo/ShanghaiAverage Response Time: ≤2.89hTerms 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.