What certifications does the company have?

Our company passed ISO9001 Certification and CE Approval for our ball valves, and UL approval for our bronze ball valves.

Customized Water Supply Brass Double Check Valve Brass Check Valve

Name: Customized Water Supply Brass Double Check Valve Brass Check Valve
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 2107036235

Zhejiang, ChinaNingbo Doway M & E Co., Ltd.

US$3.37

1,000 Pieces

Product specifications

DN15

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Media

Water

Temperature

Ordinary Temperature

Model NO.

Material

Brass

Connection Form

Thread

Structure

Swing

Pressure

Ordinary Pressure

Function

Nrvz Silence

Sealing Form

Rubber Seals

Flow Direction

Unidirection

Standard

ANSI

Application

Water Industrial Usage

Thread Standard

ISO228, ISO7/1

Keywords 1

Forged Check Valve

Keywords 2

Flap Check Valve

Color

Brass

Transport Package

Poly Bag, Inner Box, Outer Carton, and Pallet.

Specification

DN15-DN100

Trademark

Origin

Ningbo, Zhejiang, China

HS Code

8481804090

Production Capacity

50000 Pieces/Month

Key features

Brass Material Construction: Made from high-quality brass alloys like MS58, CW617N, and CuZn40Pb2 for durability.

Anti-Backflow Function: Prevents media backflow, protects pumps, and discharges container medium automatically.

Wide Size Range: Available in sizes from 1/2'' to 2'' to fit various pipeline requirements.

OEM Service Support: We offer OEM services to produce products with your own brand and specifications.

ISO Thread Standards: Pipe threads comply with ISO 7/1, ISO228, DIN2999, and other international standards.

Certified Quality: Company passed ISO9001 Certification and CE Approval for ball valves.

Flexible Payment Terms: Accepts T/T with 30% deposit and balance before delivery, plus other methods.

Fast Delivery: Delivery usually takes 15 to 30 days depending on order quantity and stock.

Company profile

High Repeat Buyers ChoiceR&D CapabilitiesManagement Certification3D Software Design

Ningbo Doway M & E Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2015-06-08Nearest Port: Ningbo, ShanghaiAverage Response Time: ≤6.44hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryThe supplier is identified as a Ningbo-based trading company with professional technical capabilities, including 3D software design, ODM, OEM, and multiple customization options. It reports ISO9001 certification and CE and UL approvals for specified valve products. Production information indicates substantial output across valves, air vents, ferrules, and pipe fittings, supported by 6–10 quality-control staff and broad export coverage, with 90% of sales from exports. Service procedures for corrective actions and complaint handling are documented and followed. However, the supplier has no overseas showroom, agents, branches, offline trade-show participation, overseas warehouse, or in-stock service capability. No new products were reported in the past year, no SDK is available, and financial evidence is limited to stated years without performance details.

Supplier typeThe company is explicitly classified as a trading company located in Haishu District, Ningbo, while also identifying itself as a professional technical supplier with R&D capability. This indicates a trading-oriented supplier with technical and design-service functions rather than evidence of a purely manufacturing company.

CertificationsThe company description states that it passed ISO9001 certification and holds CE approval for ball valves and UL approval for bronze ball valves. These certifications and approvals are explicitly reported, although their scope is limited to the products named.

After-Sales capabilityThe supplier has clear procedures and followed records for corrective and preventive actions and customer complaint handling. However, it reports no overseas agents or branches, no overseas showroom, no overseas warehouse, and no in-stock service capability, so documented complaint processes coexist with limited overseas service infrastructure.

Production capacityReported annual output includes 1,230,000 brass valves, 250,000 bronze valves, 235,000 air vents, 250,000 gunmetal ferrules, and 1,870,000 pipe fittings, supported by 6–10 quality-control staff and access to Ningbo and Shanghai ports. Nevertheless, manufacturing-capacity reconciliation, outsourcing procedures, and contracts are all listed as unknown, preventing a complete assessment of capacity controls.

Customization capabilityThe supplier explicitly offers flexible customization, minor customization, customization from samples and designs, and full customization. It also provides ODM and OEM services, directly supporting broad product-design and customization capability.

Product Q&A

Q:What is your term of payment?

T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q:How about your delivery time?

It usually takes 15 to 30 days, which generally depends on the quantity of your order and our storage.

Q:Can I get free samples?

Yes, send your address, your telephone number, post code, and express account number to us, and tell us which samples you need and samples specification.

Q:Can you produce products with my own brand?

Yes, we can offer OEM services.

Q:What materials are used for the check valve?

Materials include MS58, CW617N, CuZn40Pb2, CZ132, and CW602N, manufactured via hot stamping or forging.