What certifications does the product have?

The product holds CE certification. The company also has ISO9001 and UL approvals for specific valve types.

What is the maximum inlet pressure?

The maximum inlet pressure is 12 bar, with a setting range of 0.2 - 4 bar.

1/2" Brass Boiler Filling Valve Pressure Relief Valve

Name: 1/2" Brass Boiler Filling Valve Pressure Relief Valve
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 2041159075

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

US$5.50

500 Pieces

Product specifications

DN15

Sample price:US$7.98/piece.Request sample

Product profile

Customization

Available

High Qualaity Hot Stamping Radiator

1/2

Thread Standard

ISO227, ISO7/1

Model NO.

DW-RV520

Power

Manual

Pressure

Medium Pressure

Temperature of Media

Normal Temperature

Transport Package

Inner Box, Cartons with Wooden or Steel Pallets

Specification

1/2

Trademark

DW or OEM

Origin

China

HS Code

8481804090

Production Capacity

120000PCS/Month

Key features

Premium Brass Material: Constructed from forged brass CW617N/CW614 for durability and corrosion resistance.

OEM/ODM Customization: Supports custom branding and manufacturing with hot stamping options.

Wide Thread Compatibility: Available in ISO7/1, ISO228, NPT, and DIN2999 thread standards.

Certified Quality: Holds CE, ISO9001, and UL approvals for ball and bronze valves.

Versatile Pressure Range: Setting range 0.2-4 bar with max inlet pressure of 12 bar.

Flexible Payment Terms: Accepts T/T, LC, PayPal, and Western Union for secure transactions.

Fast Sample Availability: Free samples provided upon request with shipping details.

Reliable Delivery: Standard lead time of 15-30 days depending on order quantity.

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: ≤7.71hTerms 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 materials are used for the valve?

The valve is made of Forged Brass (CW617N, CW614, CW602N, ASTM C3770) with a brass disc and bonnet.