What are the available thread standards?

We offer ISO7/1, ISO228, NPT, and DIN2999 thread standards to meet different international requirements.

Pn20 Brass Swing Check Valve

Name: Pn20 Brass Swing Check Valve
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 734400952

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

US$0.85

1,000 Pieces

Sample price:US$3.50/piece.Request sample

Product profile

Customization

Available

Media

Water

Temperature

Ordinary Temperature

Model NO.

DW348

Material

Brass

Connection Form

Thread

Structure

Elevated

Pressure

Low Pressure

Function

One Way Flow

Sealing Form

Rubber Seals

Flow Direction

Unidirection

Standard

Application

Water Industrial Usage, Household Usage

Power

Hydraulic

Keywords 1

Brass Check Valve for Pump

Keywords 2

Foot Valve

Keywords 3

Forged Check Valve

Transport Package

Polybag, Inner Box, Carton and Wooden Pallets

Specification

3/8''-4''

Trademark

DW or OEM

Origin

China

HS Code

8481804090

Production Capacity

120000PCS/Month

Key features

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

Anti-Backflow Function: Automatically prevents media backflow, protecting pumps and motors from reverse flow.

Wide Size Range: Available in sizes from 1/2'' to 4'' with various thread standards (ISO, NPT, DIN).

OEM/ODM Service: Supports custom branding and manufacturing with strong OEM and ODM capabilities.

Versatile Application: Suitable for water, non-corrosive liquids, and saturated steam in industrial and household use.

Certified Quality: Company holds ISO9001, CE, and UL approvals ensuring high product standards.

Flexible Payment: Accepts T/T, LC, PayPal, and Western Union with 30% deposit and balance before delivery.

Free Sample Available: Customers can request free samples by providing address and specification details.

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: ≤6.63hTerms 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 valve?

The valve body is made of forged brass (CW617N, CW614, CW602N, ASTM C37700). The disc can be brass with silicon rubber seals or ABS with NBR seals.