QBY & BFQ Series Pneumatic Diaphragm Pump: Leak-Free for Hazardous Environments
As third-generation fluid handling solutions, the pneumatic diaphragm pump (QBY3 and BFQ series) uses compressed air as its power source, where reciprocating diaphragm deformation drives volume changes for reliable liquid transfer across industrial settings.
- modelQBY/BFQ Series
- brandLABEKS
- min. order1 pcs
- packageplywood case package
description
A positive displacement pump powered by compressed air, the pneumatic diaphragm pump adjusts its volume through reciprocating diaphragm deformation. Boasting six key benefits—including robust build quality, extended service life, low noise emission, minimal vibration, failure-free operation, and precision craftsmanship—it can transfer both free-flowing liquids and hard-to-move media. This unit integrates the core advantages of multiple conveying devices, such as centrifugal pumps, mud pumps, and trash pumps.
features
Non-electrical operation ensures safe, reliable performance in flammable and explosive work environments.
Equipped with no rotating components or shaft seals, the pump’s diaphragm fully isolates the pumped medium from internal moving parts, eliminating external leaks. This design prevents environmental contamination and personal harm when handling toxic, volatile, or corrosive media.
Head and flow rate can be infinitely adjusted via valve opening adjustments.
Capable of transferring both free-flowing liquids and non-flowable media, this pump integrates the key benefits of various conveying equipment, including self-priming pumps, submersible pumps, canned pumps, mud pumps, and trash pumps.
Offers six core advantages: robust quality, extended service life, low noise levels, precision craftsmanship, minimal vibration, and failure-free operation.
specifications
Model | Maximumflow (L/min) | Maximumlift (m) | Maximumsuction lift (m) | Outletpressure (kg) | Caliber(DN) | Inletport (in) | ParticleDiameter (mm) | AirConsumption (scfm) |
|---|---|---|---|---|---|---|---|---|
QBY4-10 | 22 | 70 | 4 | 7 | 10 | 1/4 | 1.5 | 6.3 |
QBY4-15 | 22 | 70 | 4 | 7 | 15 | 1/4 | 1.5 | 6.3 |
QBY3-20 | 57 | 70 | 4.5 | 7 | 20 | 1/4 | 2.5 | 12.7 |
QBY3-25 | 57 | 70 | 4.5 | 7 | 25 | 1/4 | 2.5 | 12.7 |
QBY3-32 | 151 | 84 | 5.48 | 8.4 | 32 | 1/2 | 3.2 | 23.66 |
QBY3-40 | 151 | 84 | 5.48 | 8.4 | 40 | 1/2 | 3.2 | 23.66 |
QBY3-50 | 378.5 | 84 | 5.48 | 8.4 | 50 | 1/2 | 4.8 | 32 |
QBY3-65 | 378.5 | 84 | 5.48 | 8.4 | 65 | 1/2 | 4.8 | 32 |
QBY3-80 | 568 | 84 | 5.48 | 8.4 | 80 | 1/2 | 6.4 | 45 |
QBY3-100 | 568 | 84 | 5.48 | 8.4 | 100 | 1/2 | 6.4 | 45 |
QBY3-125 | 1041 | 84 | 7.6 | 8.4 | 125 | 3/4 | 10 | 82.6 |
BFQ-25 | 116 | 84 | 5.48 | 8.4 | 25 | 1/2 | 3.2 | 23.66 |
BFQ-40 | 378.5 | 84 | 5.48 | 8.4 | 40 | 1/2 | 4.8 | 32 |
BFQ-50 | 568 | 84 | 5.48 | 8.4 | 50 | 1/2 | 6.4 | 45 |
BFQ-80 | 1041 | 84 | 7.6 | 8.4 | 80 | 3/4 | 9.4 | 82.6 |
why choose us
Premium Quality with CE & ISO
We conduct 100% performance testing on every unit, ensuring its stable operation and superior performance in your application.
24/7 Expert Technical Support
Our senior engineers are on standby 24/7, ready to provide expert solutions at any time to minimize your operational downtime.
20+ Years R&D & Production
Our deep technical expertise is your solid guarantee for professional and reliable OEM/ODM services.
Trusted in 80+ Countries
Industry leaders and research institutions in over 80 countries and regions rely on our equipment for stable operation.
True Manufacturer, Factory-Direct Price
Bypass the middlemen to get our factory pricing and speak directly with our core engineers.
Rapid & Reliable Delivery
Our extensive in-stock inventory provides a solid guarantee for rapid and reliable global delivery.

Our Factory
20 Years
58 Experts
20000 m²
7X24 Hours








