Can the bypass size be customized?

Yes, other bypass sizes can be made as required, with the maximum flow rate depending on the maximum Kv value.

What are the payment terms?

Payment terms include LC, T/T, Western Union, and Money Gram.

What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

Zdm Automatic Recirculation Pump Protection Three Way Valve

Name: Zdm Automatic Recirculation Pump Protection Three Way Valve
Brand: Goole Valve technology Co., Ltd.
SKU: 843539385

Zhejiang, ChinaGoole Valve technology Co., Ltd.

US$1.00

1 Piece

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Media

Wog

Temperature

High Temperature

Model NO.

GAZDM

Material

Wcb, Wc6, Wc9, 12crmo, 12crmov, 15CrMo, 15crmov

Connection Form

Welding

Structure

Piston

Pressure

High Pressure

Function

Non Return

Sealing Form

Self Tight Pressure Sealing

Flow Direction

Unidirection

Standard

ANSI

Application

Industrial Usage, Water Industrial Usage

Transport Package

Plywood Case

Trademark

GOOLE, OEM, ODM

Origin

China(Mainland)

HS Code

8481804090

Production Capacity

10000PCS/Year

Key features

Automatic Pump Protection: Prevents cavitation and instability during low load operation by maintaining minimum flow.

High Pressure Resistance: Supports high differential pressure up to 30 MPa with integrated multi-stage throttle relief.

Anti-Cavitation Design: M-type bypass reduces noise and prevents damage to valve components from flashing.

4-in-1 Functionality: Combines flow sensing, recirculation control, depressurization, and non-return functions.

Self-Actuated Operation: No external drive required; automatically adjusts based on sensed main flow.

Wide Material Options: Available in WCB, WC6, WC9, 12CrMo, 15CrMo, and stainless steel for various media.

Customizable Bypass: Other bypass sizes can be made as required to meet specific flow rate needs.

Broad Application Range: Suitable for industrial usage, water systems, and media like water and steam.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export Experience

Goole Valve technology Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2009-07-09Nearest Port: Ningbo, ShanghaiAverage Response Time: ≤5.03hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, DDP, DAP

AI-Powered supplier vetting

SummaryThe supplier manufactures specialized equipment for oil refining and chemical production and also conducts hardware product manufacturing, research and development, sales, and related services. It reports ISO 9001 and ISO 14001 certification, two production lines, six to ten quality-control staff, and six to ten years of total R&D engineer experience. The supplier offers broad customization, OEM, and ODM services, with documented inspection, corrective-action, complaint-handling, and traceability procedures. Export experience is stated as 15 years, with 51%–70% of total sales from exports and self-operated import/export rights. However, it has no overseas agents or branches, warehouses, showrooms, or SDK availability; it also reports no new products in the past year and no valid manufacturing-capacity contract with related subcontractors. Customer cases are not specifically provided.

Supplier typeThe stated business scope includes manufacturing and sales of specialized equipment for oil refining and chemical production, hardware product manufacturing, hardware R&D, and ferrous metal casting. The company description also covers material purchasing, production, inspection, delivery, and after-sales service, indicating a manufacturer with integrated related operations.

CertificationsThe supplier reports holding ISO 9001 and ISO 14001 certifications. These are explicit certifications relevant to quality and environmental management systems.

After-Sales capabilityThe supplier states that its operations include after-sales service and has clear, followed procedures and records for handling customer complaints and corrective and preventive actions. However, it reports no overseas agents or branches and offers overseas services in zero countries, which limits directly evidenced overseas service coverage.

Production capacityThe supplier operates two production lines, maintains six to ten quality-control staff, has in-stock service capacity, and uses documented inspection, supplier assessment, corrective-action, complaint-handling, quality-assurance, and material-traceability procedures. Nevertheless, it reports no valid contract with associated subcontractors for manufacturing capacity, creating a documented weakness in subcontracting governance.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. It also provides OEM services for well-known brands and ODM services, demonstrating broad stated customization and manufacturing-design support.

Product Q&A

Q:What is the main function of the ZDM valve?

It automatically protects centrifugal pumps from cavitation and instability during low load operation by ensuring minimum flow through a bypass.

Q:How does the valve handle high pressure?

It features an integrated multi-stage throttle relief valve in the bypass that reduces pressure, with a maximum differential pressure of up to 30 MPa.

Q:Does the valve require external power?

No, the valve is self-actuated and does not have any drive method; it operates based on sensed main flow.

Q:What materials are available for this valve?

Materials include WCB, WC6, WC9, 12CrMo, 12CrMoV, 15CrMo, 15CrMoV, and forged steel A105/F304.

Q:What is the nominal diameter range?

The nominal diameter ranges from DN40 to DN500.