Plastic Air Operated Diaphragm Pump MQ50 Series | Meibao | PP/PVDF-Meibao Pump | China's Largest Corrosion-Resistant Pump Manufacturer

Plastic Air Operated Diaphragm Pump

Air Operated Pump, Diaphragm Pump, Plastic Pump, PP, PVDF, Corrosion Resistant, Explosion-Proof, Dry-Run Capable, Self-Priming, High Flow 587L/min, 2" Port, 6mm Particle Handling, Chemical Transfer, Wastewater Treatment, Electroplating, PCB, CE Certified, OEM Available

Quick Specs

35.22 m³/h
Max Flow

84 m
Max Head

-
kW Power

-°C
Max Temp

- kg
Max Pressure

-
Warranty

Request Quotation

Response within 24 hours | Technical support available

Product Dewspiption

The Meibao MQ50 Series Plastic Air Operated Diaphragm Pump is a high-flow, corrosion-resistant fluid transfer solution engineered for handling aggressive chemicals, solvents, and abrasive fluids. Powered by compressed air without electrical components, this pump is intrinsically safe for handling flammable and explosive media. Constructed from high-quality engineering plastics such as Polypropylene (PP) and PVDF, it provides excellent resistance to a wide range of acids and alkalis. Featuring a no-shaft-seal design, self-priming capability up to 8m (wet), and the ability to run dry without damage, the MQ50 series ensures reliable, leak-free, and maintenance-friendly operation for chemical processing, electroplating, PCB manufacturing, and wastewater treatment applications.

Explosion-Proof Operation

Powered by compressed air without electricity, the pump is intrinsically safe and can transport flammable and explosive media .

Dry-Run Capable
The pneumatic diaphragm design allows the pump to run dry without damage to internal components, enhancing reliability .

Leak-Free Construction

No dynamic seals or impellers, minimizing the risk of leakage and reducing shear force on the fluid, preserving material integrity .

Corrosion-Resistant Materials

Wetted parts available in Polypropylene, Polyformaldehyde, and PVDF, offering superior resistance to aggressive acids, alkalis, and chemicals .

Superior Self-Priming Performance

Dry self-priming head up to 4m, wet self-priming head up to 7.6m, enabling efficient fluid transfer without manual priming.

Typical Applications

Chemical Processing: Transfer of acids, alkalis, solvents, and aggressive chemicals .

Wastewater Treatment: Chemical dosing and sludge transfer.

Electroplating & Surface Treatment: Plating solution and chemical bath transfer.

PCB Manufacturing: Etching and developing solution transfer.

Max Flow

35.22

m³/h

Max Head

Power Range

Certification

ATEX Optional

Technical Specifications

Model Range

MQ50

Pump Type

Air-Operated Double Diaphragm Pump

Materials

PP/PVDF

Connection

Threaded (NPT, BSPP)

Max Temperature

Max Pressure

Voltage

220V / 380V, 3Φ

Warranty

Model Coding System

MQ50PPPPEP

MQ50= Series

PP= Pump Body Material

PP= Intermediate Material

EP= Diaphragm Material

Material Options

General chemicals, max-°C

PVDF PVDF

High purity, max-°C

EPDM

High temp, max-°C

What is the maximum viscosity the MB pump can handle?

The MB magnetic drive pump is optimized for low-to-medium viscosity liquids (up to ~200 cPs at operating temperature). For high-viscosity media above 200 cPs, please contact our engineering team — we may recommend a reduced speed operation or a gear pump alternative.

Can the MB pump handle HF acid?

Yes. The MB pump with PTFE or PVDF wet-end is fully compatible with hydrofluoric acid at concentrations up to 50% and temperatures up to 80°C. PTFE offers the best HF resistance. For semiconductor-grade HF applications, we recommend our dedicated HF Series with ultra-pure material specifications.

What is the pump's NPSH requirement?

NPSH requirements vary by model and operating point. Typically, the MB series requires 2-3m NPSHa. We recommend ensuring the available NPSH (NPSHa) from your installation is at least 1m higher than the pump's required NPSHr. Full NPSH curves are available in the product datasheet.

Do you offer ATEX / explosion-proof versions?

Yes. ATEX Zone 1 and Zone 2 certified models are available for environments where flammable gases or vapors may be present. Please specify the ATEX zone and gas group (IIA, IIB, or IIC) when requesting a quote.

Can I get spare parts for this pump?

Yes. We stock a comprehensive range of spare parts for the MB series including magnet assemblies, impellers, shaft sleeves, and containment shells. Parts can be shipped within 5-10 working days to most destinations. We recommend ordering a spare parts kit with your initial order for critical applications.

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Plastic Air Operated Diaphragm Pump

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Product Dewspiption

Typical Applications

Technical Specifications

Model Coding System

Material Options

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