Is this pump suitable for dangerous environments?

Yes, it is very safe in dangerous environments because it has no electric motor.

What is the lead time for orders?

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

Air Operated Double Diaphragm Pump

Name: Air Operated Double Diaphragm Pump
Brand: Zhejiang Yonjou Technology Co., Ltd.
SKU: 769739895

Zhejiang, ChinaZhejiang Yonjou Technology Co., Ltd.

US$120.00-3,000.00

1 Piece

Sample price:US$500.00/set.Request sample

Product profile

Customization

Available

Certification

ISO9001:2008, CE

Material

Cast Iron and Stainless Steel

Model NO.

QBY

Power

Pneumatic

Valve Body Type

Diaphragm

Function

Diaphragm

Diaphragm Material

NBR/ PTFE

Performance

Corrosion

Place of Origin

China

Brand Name

Yonjou

Model Number

Qby-25

Theory

Pneumatic

Structure

Diaphragm Pump

Usage

All Kinds Water Oil Chemicals

Standard or Nonstandard

Standard

Fuel

None

Pressure

High Pressure

Application

Metering

Transport Package

Plywood Case

Specification

CE ISO9001

Trademark

YONJOU

Origin

China

HS Code

841311000

Production Capacity

6600sets

Key features

Pneumatic Power Source: Operates using compressed air, smoke, or exhaust gas without electric motors for safety.

Corrosion Resistant: Suitable for transporting oil, water, and chemicals with NBR/PTFE diaphragms.

Self-Priming Capability: Features self-priming, diving, and slurry pump functions for difficult media.

Wide Material Options: Casing available in Cast Iron, Stainless Steel, PP, and Aluminium.

Certified Quality: ISO9001:2008 and CE certified for international standards compliance.

High Flow Capacity: Flow rate ranges from 0.8 to 30 m3/h depending on the model.

Versatile Connections: Supports flange, thread, and quick coupled installation positions.

Company profile

Importers and ExportersYears of Export ExperienceExperienced TeamHigh Repeat Buyers Choice

Zhejiang Yonjou Technology Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2001-02-01Nearest Port: NINGBO, SHANGHAIAverage Response Time: ≤8.27hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF, DDP, CIP

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier serving machinery and specialized equipment sectors, including pumps, motors, marine engineering, oil refining and chemical equipment, and food equipment. It provides sample-based, fully customized, and flexible customization services, plus ODM and OEM services, but does not provide 3D software design or SDK support and reported no new products in the past year. Production information lists five pump product capacities totaling 90,000 pieces annually, eight production lines, and CNC facility involvement. Quality procedures, corrective actions, complaint handling, and quality assurance are documented, although the quality-control staff count is below five. The supplier has substantial export activity, has attended the Canton Fair, and operates ERP-based digital management, but has no overseas agents, branches, warehouses, or showrooms. Certification, after-sales service, financial credibility, and customer-specific cases are not sufficiently...

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier and operates across machinery, marine engineering, oil refining and chemical equipment, food equipment, motors, generators, and related industrial products. This supports classification as a specialized industrial equipment manufacturer rather than a general trading company.

R&D capabilityThe supplier supports ODM and customization and uses an ERP system for production, procurement, quality control, and logistics management. However, it does not provide 3D software design or SDK support and reported no new products during the past year, indicating limited evidence of recent product innovation.

Production capacityThe supplier reports eight production lines, CNC facility involvement, documented finished-product inspection instructions, and annual capacities of 15,000 KCB gear pumps, 20,000 LQRY hot oil pumps, 15,000 LQ3G three-screw pumps, 30,000 QBY diaphragm pumps, and 10,000 LQ3A lobe pumps. However, it lacks an effective contract with related subcontractors and has no inventory capability, so production capacity is evidenced but manufacturing-resource controls have limitations.

Customization capabilityThe supplier explicitly provides customization from samples, full customization, and flexible customization, and also offers ODM and OEM services for popular brands. These statements directly demonstrate broad customization and design-manufacturing support.