What is the flow range of this valve?

The flow range is 5-30 20-40 [kPa].

What certifications do your products have?

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

Cw602n Cr Self-Standing Differential Pressure Valve

Name: Cw602n Cr Self-Standing Differential Pressure Valve
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 2104601815

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

US$22.21

1,000 Pieces

Product specifications

DN20

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Media

Water

Temperature

Ordinary Temperature

Model NO.

DW-DPBV001

Connection

Thread

Pressure

Adjustable

Closed

Structure

Self-Standing

Material

Brass

Thread Standard

ISO228, ISO7/1

Installation

Vertical Installation

Knob

ABS Polymer Knob

Keywords

Dpbv

Transport Package

Poly Bag, Inner Box, Outer Carton and Pallet

Specification

DN15-DN50

Trademark

DW or OEM

Origin

China

HS Code

8481804090

Production Capacity

170000PCS/Month

Key features

Adjustable Differential Pressure: Automatically regulates differential pressure for heating and cooling systems with adjustable settings.

High-Quality Brass Construction: Housing and parts made from dezincification resistant brass CW602N and stainless steel spring.

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

Certified Quality Assurance: Products passed ISO9001, CE, and UL approvals ensuring high quality and safety standards.

Easy Installation Design: Self-standing structure allows vertical installation in return lines without stabilizing sections.

Durable Material Components: Seals and diaphragms use EPDM, and shut-off parts use PPS for long-lasting performance.

Multiple Size Options: Available in sizes ranging from 1/2 inch to 2 inches to fit various system requirements.

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: ≤6.66hTerms 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 the 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 is the working pressure and tested pressure?

The working pressure is 2.5 Mpa and the tested pressure is 1.0Mpa.