I. Core Technological Innovations

**Valveless/Integrated Air Valve Design**

Utilizes third-generation integrated air valve technology, completely eliminating issues common to traditional external air valves—such as stalling and short service life—to ensure continuous, stall-free operation; the simplified structure facilitates easy maintenance.

The integrated air valve enables stepless control of flow rate and discharge head via air pressure regulation (1–7 bar), meeting the demands of diverse operating conditions.

**Multi-Media Compatibility**

Capable of transporting free-flowing liquids, high-viscosity fluids (up to 10,000 cP), media containing particles (max. diameter 10 mm), or crystallizing fluids; highly resistant to wear from slurries and impurities.

Diaphragms completely isolate the pumped medium from moving parts; the leak-proof design is suitable for highly toxic, flammable, and explosive liquids, ensuring safety and environmental compliance.

II. Performance Advantages

**High-Efficiency Self-Priming Capability**

No priming required; offers a self-priming lift of 5–7 m, a maximum discharge head of 70 m, and an outlet pressure of ≥6 bar—outperforming traditional centrifugal and submersible pumps.

Capable of submerged operation; safe to run dry without damage; features automatic overload shutdown and auto-restart upon recovery.

**Safety and Adaptability**

Pneumatically driven (no electricity required); ATEX explosion-proof certified; suitable for flammable, explosive, humid, and dusty environments.

No rotating parts or shaft seals; requires no lubrication; corrosion-resistant materials (304/316L stainless steel) handle strong acids, alkalis, and organic solvents.

III. Application Scenarios and Industry Coverage

**Chemical and Environmental Protection**

Transports acids, alkalis, salt solutions, waste liquids, and particle-laden sewage; excels in hazardous waste treatment.

Suitable for food and pharmaceutical industries; meets sanitary standards; capable of handling demanding media such as fruit juices and medicinal fluids.

**Mining and Specialized Conditions**

Used for mine dewatering and tunnel grouting; withstands harsh environments; serves as a replacement for screw pumps in the petroleum industry for transporting viscous crude oil.

Highly portable; requires no fixed foundation; can be used as a temporary material transfer pump.

IV. User Experience and Maintenance Advantages

Ease of Operation: Start and stop simply by toggling the air valve; supports extended dry-running (operation without media).

Low Maintenance Costs: Features few wear parts and a modular structural design, ensuring high efficiency during disassembly and maintenance.

Cost-Effectiveness: Offers lower overall energy consumption compared to electric pumps and requires no auxiliary variable frequency drives or gear reducers.

Through technological innovation and material upgrades, the QBK series has established core competitiveness in corrosion resistance, safety, and compatibility with diverse media, making it an ideal pumping solution for industries such as chemicals, environmental protection, and food processing.