Is customization available for this valve?

Yes, we offer full, minor, and flexible customization based on samples or designs.

What certifications does the product have?

The product is certified under ISO9001 standards.

Flange Control Valve for Backflow Prevention and Pollution Isolation

Name: Flange Control Valve for Backflow Prevention and Pollution Isolation
Brand: Fujian Quanguan Valve Manufacturing Co., Ltd.
SKU: 2325891615

Fujian, ChinaFujian Quanguan Valve Manufacturing Co., Ltd.

US$230.00-1,300.00

1 Piece

Sample price:US$50.00/piece.Request sample

Product profile

Customization

Available

Temperature

0 ℃-80 ℃

Certification

ISO9001

Model NO.

HS41X-16Q

Media

Water

Standard

Connection Mode

Flange

Material

Stainless Steel

Type

Self-Operated

Nominal Pressure

1.0 MPa,1.6 MPa

Sealing Material

EPDM

Color

Blue or Black

Function

Block Polluted Backflow

Application

High-Rise Buildings, Secondary Water Supply

Advantage

Double Safety Protection, Low Resistance

Transport Package

Export Standard Package

Specification

DN40-DN600

Trademark

quanguan

Origin

China

Key features

Double Safety Protection: Dual check valves plus intermediate drainer prevent backflow contamination even if both valves leak.

Low Flow Resistance: Straight-flow streamlined design reduces head loss for energy conservation and consumption reduction.

Wide Pressure Range: Available in 1.0 MPa and 1.6 MPa nominal pressures for DN40 to DN600 pipe sizes.

Durable Sealing Material: EPDM sealing material offers wear-resistant and corrosion-resistant performance.

Flexible Customization: Supports full, minor, and flexible customization from samples or designs.

Versatile Application: Ideal for high-rise buildings, secondary water supply, hospitals, hotels, and fire-fighting systems.

Long Service Life: Movable parts use stainless steel and wear-resistant materials for maintenance-free operation.

Easy Installation: Flanged connection with compact dimensions and horizontal mounting orientation.

Company profile

High Repeat Buyers ChoiceSelf-brandedExhibition ExperienceODM Services

Fujian Quanguan Valve Manufacturing Co., Ltd.

Fujian, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 Years CertifiedNearest Port: Xiamen PortAverage Response Time: ≤10.51h

AI-Powered supplier vetting

SummaryQuanguan Valve is identified as a professional valve manufacturer in Quanzhou, Fujian, producing and selling water-system and HVAC valves, including gate valves, pressure-reducing valves, and static-balance valves. Its broader scope also covers fire-fighting equipment, pipe fittings, plumbing, copper, rubber, and plastic products. The supplier provides extensive customization and ODM services, with documented R&D design inputs, outputs, reviews, verification, and validation; however, it reported no new products in the past year and has zero R&D patents. Manufacturing covers a 2,863 m² plant and two production lines, but finished-product inspection is performed by packing staff and batch quantity reconciliation is not conducted continuously. Export experience is stated as seven years, with two export-trade staff and three experienced staff reported. Service weaknesses include no written corrective/preventive-action, complaint-handling, or service-capability assessment procedures. No certification, customer...

Supplier typeThe supplier is explicitly described as a valve manufacturer engaged in production, R&D, and sales, with products spanning valves, fire-fighting equipment, pipe fittings, plumbing, and related industrial and building-material categories. Its stated commercial focus is industrial equipment and components, particularly water-system and HVAC valves.

After-Sales capabilityThe supplier accepts multiple quotation and payment arrangements and reports peak-season lead time of one month and off-season lead time within 15 working days. However, it has no written corrective/preventive-action procedures, no written complaint-handling procedures or records, and no written service-capability assessment procedure or records, indicating a documented after-sales service weakness.

Production capacityThe supplier operates a 2,863 m² manufacturing plant with two production lines and manufactures valves and related products; it also reports seven years of export experience. Production-control limitations are stated: finished products are checked by packing staff, and continuous quantity reconciliation for each batch or mass-production run is not performed.

Customization capabilityThe supplier explicitly offers customization from samples, designs, minor and full customization, flexible customization, and ODM services. Its R&D responsibilities and documented design inputs, outputs, reviews, verification, and validation further support the ability to develop customer-requested products.

Product Q&A

Q:What materials are used for the valve body?

The valve body is primarily made of ductile iron, with stainless steel also available as an option.

Q:How does the anti-pollution mechanism work?

It uses series-connected dual check valves and an intermediate-chamber drainer to form an air gap and stop backflow even during simultaneous valve leakage.

Q:What is the minimum order quantity?

The minimum order quantity is 1 piece.

Q:What payment terms are accepted?

Accepted payment terms include LC, T/T, D/P, PayPal, and Western Union.

Q:What is the lead time for production?

Lead time is within 15 workdays during off-peak season and one month during peak season.