What is the main function of this check valve?

It is an automatic valve used to prevent media backflow, prevent pump and drive motor reverse, and discharge container medium.

DN15-DN25 Male Thread Brass No Return Valve

Name: DN15-DN25 Male Thread Brass No Return Valve
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 1960012755

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

US$1.25

1,000 Pieces

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Media

Water

Temperature

Ordinary Temperature

Model NO.

DW-CV542

Material

Brass

Connection Form

Thread

Structure

Elevated

Pressure

Ordinary Pressure

Function

One Way Flow

Sealing Form

Rubber Seals

Flow Direction

Unidirection

Standard

ISO228

Application

Water Industrial Usage, Household Usage

Brass

Thread

ISO228

Keywords 1

Lift Check Valve

Keywords 2

Forged Check Valve

Keywords 3

One Way Valve

Transport Package

Poly Bag, Inner Box, Carton and Pallet.

Specification

1/2''-4''

Trademark

DW or OEM

Origin

China

HS Code

8481804090

Production Capacity

120000PCS/Month

Key features

Forged Brass Material: Constructed from high-quality forged brass (CW617N, CW614, CW602N) for durability.

Anti-Backflow Function: Automatically prevents media backflow, protecting pumps and reverse discharge.

Wide Size Range: Available in sizes from 1/2'' to 4'' to fit various pipeline requirements.

Multiple Thread Standards: Supports ISO7/1, ISO228, NPT, and DIN2999 thread standards for compatibility.

OEM Service Available: We offer OEM services to produce products with your own brand.

Fast Delivery: Delivery time is typically 15 to 30 days depending on order quantity.

Certified Quality: Company passed ISO9001 Certification and CE Approval for quality assurance.

Versatile Application: Suitable for water, non-corrosive liquids, and saturated steam systems.

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 disc and seals?

Options include Brass Disc with silicon rubber seals or ABS disc with NBR seals.