What is the turndown ratio for airflow adjustment?

The turndown ratio is 4:1 with high airflow adjustment accuracy.

Is external power required for operation?

No, it is a mechanical self-adjusting device that does not require external power.

No External Power Constant Air Flow Control Valve

Name: No External Power Constant Air Flow Control Valve
Brand: Guangdong Yaoan Industrial Co., Ltd.
SKU: 2155363952

Guangdong, ChinaGuangdong Yaoan Industrial Co., Ltd.

US$10.00-60.00

1 Piece

Sample price:US$12.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Usage

for Air Conditioner

Type

Non Return Dampers

Venetian-Style Air Layers

Single

Installation

Duct Fans

Certification

CCC

Transport Package

Wooden Pallet

Specification

Customized

Trademark

YAOAN

Origin

China Zhaoqing

Key features

Constant Air Volume Control: Maintains preset air volume within 50-10 Pa pressure difference, unaffected by duct pressure fluctuations.

No External Power Required: Automatic mechanical mechanism for airflow direction adjustment without external power source.

Flexible Customization: Custom sizes and materials (Galvanized Steel/Stainless Steel) available based on drawings or requirements.

Versatile Installation: Suitable for horizontal or vertical installation in fresh air, exhaust, VAV, and clean air systems.

ISO9001 Certified Quality: Manufactured under strict ISO9001 quality management system with 100% finished product inspection.

Professional Manufacturer: Established in 1996 with 23,000 sqm production base and 30 years of industry experience.

Company profile

Guangdong Yaoan Industrial Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤1.56h

AI-Powered supplier vetting

SummaryThe supplier demonstrates documented quality, corrective-action, complaint-handling, and finished-product inspection procedures. It holds ISO9001:2015, ISO14001, and ISO45001:2018 certifications and reports recent product development, ODM, OEM, and broad customization services. Its stated business activities cover new-energy, photovoltaic, power-electronic, and related equipment, while offered products are HVAC ventilation and fire-protection equipment. Production resources include nine production lines, but there is no valid manufacturing-capacity contract with related subcontractors, no inventory, overseas warehouse, overseas showroom, overseas agent or branch, or stated overseas-service coverage. Export experience is one year, supported by two experienced export-trade staff. Controls are incomplete in some areas: production batches are not continuously quantity-reconciled and no outsourcing SOP is established. Customer-case evidence is limited to OEM service for unnamed well-known brands and...

CertificationsThe supplier reports ISO9001:2015, ISO14001, and ISO45001:2018 certifications. These explicitly support quality, environmental, and occupational health and safety management certification.

After-Sales capabilityThe supplier has clear procedures and followed records for corrective and preventive actions and customer complaints. However, it reports no overseas warehouse, showroom, overseas agent or branch, and zero countries with overseas services, so an international after-sales network is not demonstrated.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and offers OEM services for well-known brands. It does not have an available SDK, but SDK availability is not sufficient by itself to negate the demonstrated product-development and design-manufacturing capabilities.

Production capacityThe supplier reports nine production lines, but has no valid manufacturing-capacity contract with related subcontractors, no inventory capacity, no continuous quantity reconciliation for each batch or mass production, and no outsourcing SOP. These stated production-control and capacity-support gaps are material deficiencies.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM services, providing direct evidence of broad customization capability.