What are the payment terms?

We accept LC, T/T, PayPal, and Western Union.

What is the lead time for production?

The lead time is one month during the off-season and 1-3 months during the peak season.

What is the packaging method?

The valves are packed on wooden pallets.

Ductile Iron Pressure Relief Valve for Pipeline

Name: Ductile Iron Pressure Relief Valve for Pipeline
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 2272797045

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

US$88.60

50 Pieces

Product specifications

DN50

Product profile

Customization

Available

Media

Water

Standard

ISO

Certification

ISO

Temperature

Ordinary Temperature

Connection

Flange

Valve Seat

Single-Seat

Structure

Diaphragm

Material

Ductile Iron

Valve Stem

Stainless Steel

Valve Seat & Valve Disc

Brass

Spring

Stainless Steel

Surface

Epoxy

Transport Package

Wooden Pallet

Specification

DN50-DN600

Trademark

Origin

China

HS Code

8481804090

Production Capacity

50000PCS/Month

Key features

Stable Downstream Pressure: Maintains constant outlet pressure regardless of upstream fluctuations or downstream demand changes.

Versatile Application: Suitable for domestic water supply, fire-fighting systems, and industrial water supply systems.

Flexible Installation: Can be installed in any orientation as long as flow direction matches the valve body arrow.

Durable Material Construction: Constructed from ductile iron with stainless steel stem and brass valve seat/disc for longevity.

Wide Size Range: Available in DN50 to DN600 sizes to fit various pipeline requirements.

ISO Certified Standard: Manufactured and tested according to ISO standards for quality and reliability.

Protective Surface Finish: Features epoxy coating to prevent corrosion and extend service life.

Maintenance Friendly Design: Requires upstream gate valve and strainer installation to facilitate easy maintenance.

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: ≤7.40hTerms 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.