Powered by Made-in-China.com
China Factory 3 Bar Pressure Relief Valve
US$2.38
1,000 Pieces
Sample price:US$2.50/piece.Request sample
Product profile
Customization
AvailableMedia
GasTemperature
High TemperatureModel NO.
DW387Connection
ThreadClosed
Semi-ClosedStructure
SpringMaterial
BrassThread Standard
ISO228, ISO7/1Installation
Vertical InstallationKeywords 1
Water Safety ValveKeywords 2
Steam Safety Relief ValveTransport Package
Poly Bag, Inner Box, Outer Carton and PalletSpecification
1/2"Trademark
DW or OEMOrigin
ChinaHS Code
8481804090Production Capacity
170000PCS/MonthCompany profile
Business Type: Manufacturer/FactoryExport Year: 2015-06-08Nearest Port: Ningbo, ShanghaiAverage Response Time: ≤6.93hTerms 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.
Send Inquiry
*To:
Ningbo Doway M & E Co., Ltd.
Ningbo Doway M & E Co., Ltd.*Content:
Supplier replies will be sent to your registered email
You may also like
China Factory Brass Pressure Relief Safety Valve
US$4.65-4.99
1,000 Pieces(MOQ)
1/2 Inch Nickle Plated Brass Pressure Relief Valve China Factory
US$2.38
5,000 Pieces(MOQ)
3 Bar Fxf Safety Pressure Relief Valve
US$2.38
1,500 Pieces(MOQ)
China Factory Nickle Plated Brass Pressure Relief Valve
US$4.55
1,000 Pieces(MOQ)
6A (PSL-3, PR1) , Nace Mr0175 Hydraulic Pressure Relief Safety Valve
US$700.00-1,300.00
1 Piece(MOQ)
Vhs20-02A Vhs30-03A Vhs40-04A 3-Port Safety Valve Compliant Pressure Relief Valve
US$10.00-100.00
1 Piece(MOQ)
Food Grade Stainless Steel 304 316L Low Pressure Spring Loaded Sanitary Pressure Safety Valve 1 Bar 3 Bar
US$45.00-55.00
1 pieces(MOQ)
2.5-8 Bar 1/2" -3/4" Boiler Use Brass Pressure Relief Valve
Negotiable
1,000 Pieces(MOQ)
3" Flanged Pressure/Vacuum Relief Valve
US$155.00
1 Piece(MOQ)
6 Bar 8 Bar Brass Pressure Relief Boiler Safety Valve
US$2.64
1,000 Pieces(MOQ)
3 Bar Combi Boiler Pressure Relief Valve for Gas Boiler
US$1.80-2.50
100 Pieces(MOQ)
Safety Relief Angle Valve with Pressure Gauge Connection 3 Bar
US$1.55-8.00
2,000 Pieces(MOQ)
China Stainless Steel Food Equipment Pressure Vacuum Relief Valve (JN-SV1007)
US$10.00-40.00
1 Piece(MOQ)



















![[Ruoteng]A21W-16p Stainless Steel Safety Valve Micro-Open External Thread Safety Valve Spring Thread Pressure Relief Valve](https://image.sourcingai.com/202f0j00THLMjvmFbQuU/-Ruoteng-A21W-16p-Stainless-Steel-Safety-Valve-Micro-Open-External-Thread-Safety-Valve-Spring-Thread-Pressure-Relief-Valve.jpg)