Is the pump safe for toxic or corrosive media?

Yes, because the diaphragm separates the pumped medium from the moving parts, the medium will not leak out, preventing environmental pollution and endangering personal safety.

5 Inch Pneumatic Diaphragm Pump Self-Priming Double Diaphragm Pump

Name: 5 Inch Pneumatic Diaphragm Pump Self-Priming Double Diaphragm Pump
Brand: Anhui Hengnai Pump Industry Co., Ltd.
SKU: 2061323492

Anhui, ChinaAnhui Hengnai Pump Industry Co., Ltd.

US$1,089.00

1-9 Pieces

US$1,029.00

10+ Pieces

Sample price:US$1089.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

After Sale Service Support

Warranty

3 Year Warranty

Model NO.

QBY125

Certification

Voltage

Pneumatic

Material

Aluminum Alloy

Power

Pneumatic

Valve Body Type

Diaphragm

Diaphragm Material

Santoprene/Super PTFE/PVDF

Performance

No Leak

Transport Package

Export Packing Method

Specification

1inch/1-1/2 inch/1-1/4inch/2 inch/3 inch/4inch/5in

Trademark

Hengnai

Origin

China

HS Code

8413501090

Production Capacity

50000 Pieces /Year

Key features

Leak-Proof Design: Diaphragm separates medium from moving parts, ensuring zero leakage of toxic or corrosive fluids.

Explosion-Proof Safety: No electricity required, making it safe for use in flammable and explosive environments.

High Suction & Lift: Suction lift up to 7m and lift up to 50m without needing irrigation or diversion.

Adjustable Performance: Head and flow can be adjusted steplessly via air valve opening (1-7kgf/cm2 pressure).

Self-Protection Feature: Automatically restarts after load returns to normal; safe even if running dry or stopping suddenly.

Easy Maintenance: Simple structure with few wearing parts; easy to install and maintain.

Submersible Operation: Can work fully submerged in the medium being pumped.

3-Year Warranty: Provides a 3-year warranty coverage for the product.

Company profile

Fast DeliveryLow MOQFlexible CustomizationR&D Capabilities

Anhui Hengnai Pump Industry Co., Ltd.

Anhui, China

Business Type: Trading Company, Individuals/SOHOAverage Response Time: ≤1.75h

AI-Powered supplier vetting

SummaryThe supplier has basic product and management certifications, including CE and ISO9001:2015, and reports lead times within 15 working days in both peak and off-season periods. It offers flexible customization and accepts several international trade and payment terms. However, its disclosed R&D resources are limited to one engineer, with no new products launched in the past year, no ODM, SDK, or well-known-brand OEM services, and no available R&D audit documentation. Production and quality infrastructure appear limited: fewer than five quality-control staff, zero reported quality test equipment, no written corrective-action or complaint-handling procedures, and unknown traceability and quality-assurance status. Overseas service coverage is absent, with no agents, branches, warehouse, showroom, or overseas service countries. No Fortune 500 collaboration is reported, and repeat-buyer preference is only 10%–30%.

CertificationsThe supplier reports CE product compliance certification and an ISO9001:2015 management-system certificate. These are explicit certifications, although the sustainability evidence is weaker because no factory environmental impact assessment report or recent regular fire-drill record is reported.

R&D capabilityInnovation evidence is limited: one R&D engineer uses CAD, while no new products were launched in the past year, no R&D audit documentation is available, and the supplier has no ODM, SDK, or product-information R&D capability reported. These findings indicate a clear weakness in demonstrated innovation output and formal R&D infrastructure.

Customization capabilityThe supplier explicitly reports flexible customization capability. This directly supports an advantage for customer-specific design or product adjustments, although no further detail is provided on customization scope, engineering process, or delivery constraints.

Client casesNo collaboration with Fortune 500 companies is reported, and repeat-buyer preference is stated at 10%–30%. The provided slices do not identify named customers, completed projects, or other verifiable customer cases, so the supplier’s reference-customer strength cannot be established.

Product Q&A

Q:Can we use our own brand and logo?

Yes, it is acceptable to use your own brand and logo.

Q:What payment methods do you accept?

Most customers choose T/T. We also accept L/C. For L/C, please confirm with us regarding the exact order. For other payment methods, please contact us.

Q:How is the pump delivered?

Small pumps are delivered by international express (DHL, FEDEX, UPS, TNT). Larger pumps or large quantities are delivered by sea or according to customer requirements.

Q:What is the warranty period?

We normally provide a 5-year warranty for the pump body. According to international standards, the standard operation warranty is 12 months (excluding wearable parts and seals). For wearable parts and seals, we provide replacements at cost price.

Q:Can the pump handle difficult-to-flow media?

Yes, the pump can transport difficult-to-flow media. The maximum particle diameter allowed to pass is 10mm, and there is little wear when pumping mud and impurities.