What are the available sizes?

Sizes range from DN50 to DN400, with specific lengths and heights provided for each size.

What payment terms are accepted?

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

What is the lead time for production?

Peak season lead time is 1-3 months, while off-season lead time is one month.

High Pressure Resistant Pressure Holding and Relief Valve for Hydraulic System

Name: High Pressure Resistant Pressure Holding and Relief Valve for Hydraulic System
Brand: Ningbo Doway M & E Co., Ltd.
SKU: 2264088035

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

US$75.00

300 Pieces

Product specifications

DN50

Product profile

Customization

Available

Media

Water

Material

Ductile Iron

Model NO.

DW-500X

Connection Form

Flange

Driving Mode

Manual

Nominal Pressure

Pn16

Channel

Straight Through Type

Structure

Floating Ball Valve

Type

Floating Ball Valve

Function

Water Flow Control

Temperature

Normal Temperature

Standard

OEM,ODM

Application

Industrial Usage

Valve Stem

Stainless Steel

Valve Seat & Valve Disc

Brass

Spring

Stainless Steel

Surface

Epoxy

Transport Package

Wooden Pallet

Specification

DN50-DN400

Trademark

Origin

China

HS Code

8481804090

Production Capacity

50000PCS/Month

Key features

Pressure Protection: Maintains pipeline pressure below safe setpoints to prevent damage from high pressure or surges.

Upstream Pressure Control: Keeps upstream supply pressure above setpoints to protect the pressure in the supply zone.

Durable Material: Constructed from Ductile Iron with Stainless Steel valve stem and Epoxy surface coating.

Precise Adjustment: Field adjustable opening pressure via handwheel and closing time via needle valve.

OEM/ODM Support: Standard supports OEM and ODM customization for industrial usage requirements.

Wide Size Range: Available in DN50 to DN400 sizes with corresponding length and height dimensions.

Easy Installation: Designed for horizontal installation with clear flow direction alignment and upstream filtering.

Manual Operation: Manual driving mode ensures reliable control and maintenance of hydraulic systems.

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: ≤7.45hTerms 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.