What certifications does the product have?

The product complies with BS, ANSI, EN, ISO, and GB standards and holds CE certification.

What is the lead time for production?

The average lead time is one month, regardless of peak or off-peak seasons.

Is OEM service available?

Yes, the company offers OEM and ODM services including customization from samples and designs.

Huhang Hadl41X DN40-DN600 China Pressure Differential Backflow Valve

Name: Huhang Hadl41X DN40-DN600 China Pressure Differential Backflow Valve
Brand: Huhang Technology Group Co., Ltd.
SKU: 2092012872

Fujian, ChinaHuhang Technology Group Co., Ltd.

US$29.00-198.00

1 Piece

Product profile

Customization

Available

Media

Water

Temperature

Less Than or Equal to 80 Degrees

Model NO.

HADL41X

Material

Ductile Iron,Stainless Steel,Cast Steel

Connection Form

Flange

Structure

Swing

Pressure

Low Pressure

Sealing Form

Gland Packings Globe Valve

Flow Direction

Unidirection

Standard

BS, ANSI,En, ISO, GB

Application

Industrial Usage, Water Industrial Usage, Household Usage

Transport Package

Export Standard Packagea

Specification

DN40-DN600

Trademark

huhang

Origin

China

Production Capacity

50000PCS/Month

Key features

Patented Dual-Chamber Control: Innovative invention with patent ZL 2013 1 0718280.5 ensuring zero backflow.

Energy Saving Design: No pressure reduction at inlet, saving 25% energy compared to standard valves.

Premium Material Construction: All internal components made of stainless steel or copper alloy for pollution-free flow.

Automatic Drainage Safety: Drain valve opens automatically when pressure difference drops below 14 KPa to prevent backflow.

Customizable Size Standards: Size standards can be customized according to specific requirements.

Comprehensive OEM/ODM Service: Offers full customization, minor customization, and flexible customization options.

Strict Quality Inspection: 100% inspection including visual and function checks on all finished products.

Fast Production Capacity: Supply ability of 50,000 meters per day with one-month lead time.

Company profile

High Repeat Buyers ChoiceSelf-brandedPatents AwardedExhibition Experience

Huhang Technology Group Co., Ltd.

Fujian, 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: 7 years CertifiedNearest Port: Xiamen PortAverage Response Time: ≤2.58h

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad manufacturing and technical capabilities, including environmental-protection equipment, water-resource machinery, fire-related services, OEM/ODM support, product customization, and SDK availability. It reports ISO9001:2015, ISO45001:2018, ISO14001, CE, and other certifications. Quality, complaint handling, corrective-action, finished-product inspection, and supplier-assessment procedures are documented and followed. Production evidence includes three production lines, inventory capability, ten experienced export-trade staff, and one-month average lead times in both peak and off-season periods. However, the supplier lacks a valid contract with affiliated subcontractors and has no overseas warehouse or showroom. Financial information is identified for 2021–2023, but the provided slices do not disclose financial results or sufficient indicators to assess financial strength. No Fortune 500 cooperation is reported, although OEM service for well-known brands and repeat-buyer...

Supplier typeThe stated business scope covers sales and manufacturing of environmental-protection and water-resource equipment, as well as fire technical services and related technical services. This indicates a manufacturer and technical-service supplier rather than a purely trading entity.

CertificationsThe supplier reports CE and other product-compliance certifications, together with ISO9001:2015, ISO45001:2018, ISO14001, and other management or sustainability certifications. These explicitly support compliance and management-system capability.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaints, plus written supplier-service assessment procedures. However, it reports no overseas warehouse and no overseas showroom, which limits certain overseas service resources.

R&D capabilityThe supplier reports new products during the past year, ODM capability, SDK availability, and eight R&D engineers. These are explicit indicators of active product-development and technical resources.

Production capacityProduction evidence includes three production lines, inventory capability, standardized finished-product inspection instructions, one-month average lead times in both peak and off-season periods, and quality-assurance procedures. A deficiency exists because the factory and affiliated subcontractors reportedly have no valid manufacturing contract, creating a documented subcontracting-control weakness.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, indicating broad product-development and customization coverage.

Client casesThe supplier reports OEM service for well-known brands and a repeat-buyer preference of 80%–100%, which supports the existence of established customer relationships. However, it reports no cooperation with Fortune 500 companies, and no specific customer names or case details are provided.

Product Q&A

Q:How does the valve prevent backflow?

It uses a pressure differential principle with a dual-chamber control. When pressure difference drops below 14 KPa, the drain valve opens to create an air gap, effectively preventing any backflow.

Q:What materials are used for internal components?

All internal components are made of stainless steel or copper alloy to ensure they are pollution-free.

Q:Can the valve size be customized?

Yes, the size standards can be customized according to your specific requirements.

Q:What is the maximum operating temperature?

The valve is designed for media with a temperature of less than or equal to 80 degrees.

Q:Does the valve cause pressure loss?

No, the design ensures no pressure reduction at the inlet, which helps save 25% energy.