1. Product introduction
The sanitary stainless steel pneumatic diaphragm pump produced by our company is the core product of cooperation technology with foreign enterprises, and is made in China with foreign technologies. The product design is reasonable, with the advantages of no sealing, explosion-proof, low shear, easy maintenance, idling allowed, portable, self priming, multi material selection, etc.
2. Product pictures

3. Scope of application
1. Beverage industry: fermented concentrate, dregs, hot fruit juice, syrup, gas-liquid mixture, corn syrup, wine, fruit juice, jam
2. Pharmaceutical industry: tablets, ointment, alcohol, filtering aids, plant extracts
3. Food industry: honey, essence, spices, chocolate, vinegar, syrup, vegetable oil, animal blood
4. Daily chemical industry: detergent, cream, hand sanitizer, surfactant, shampoo, latex, hair gel, soap
5. Paper industry: lotion, adhesive, pigment, resin, dispersant, printing ink, kaolin, hydrogen peroxide
6. Oil tank car industry: tank car cleaning equipment, tank loading and discharge of vehicle oil tank
7. Automobile manufacturing: emulsion oil, grinding lotion, oil, coolant, hydraulic oil, paint preparation, paint additives, decontamination tank, cutting oil, water and glycol mixing, painting
4. Product Features
1. No irrigation is required. Super high suction. Suction lift up to 7m
2. Good trafficability. Particles and mud with a diameter of less than 10mm can pass through easily.
3. As the diaphragm will be separated from the transmission medium and the transmission mechanical parts, the medium will never leak out; And the pump itself has no shaft seal, which greatly extends the service life; According to different media, the diaphragm can be divided into neoprene, fluororubber, nitrile rubber, polytetrafluorohexene, Teflon (F46), etc.
4. The medium overflow part of the pump body can be divided into cast iron, stainless steel, fluorine lining and aluminum alloy according to different user requirements.
5. Model Meaning

6. Specifications

Note: 1. The materials of overcurrent components include 304 stainless steel and 316 stainless steel
2. Diaphragm materials include neoprene, fluororubber, NBR, PTFE, and Teflon (F46)
7. Installation method
(1) The pump shall be installed and fixed on a stable foundation. It is better to lay a cushion between the base and the foundation. Ensure that the pump will not affect the vibration of the pipeline when it is started. The pump is not affected by other mechanical vibration.
(2) When installing the pipeline, it shall be noted that the inlet and outlet pipelines of the pump shall not exert force on the pump and shall be equipped with corresponding supports.
(3) The equipment must be grounded during installation.
8. Precautions
(1) Before using the pump, each fastener of the pump should be checked.
(2) Before operating the equipment, you must read all instructions and understand the contents of various signs and labels.
(3) The conveyed medium and its temperature shall be within the allowable range of pump flow passage parts.
(4) When the conveying liquid is a medium that is easy to precipitate and crystallize, clean and discharge the deposits in the electric diaphragm pump in time after use to avoid damage when it is opened again.
(5) Do not exceed the maximum working pressure of the lowest rated component of the system being used.
9. Frequently Asked Questions
(1) If there are bubbles in the fluid, it may be that the suction pipe is loose and the diaphragm is broken.
(2) Fluid in exhaust gas may be caused by severe wear of vulnerable parts.
(3) Air leakage from the pump may be caused by wear of the central shaft seal.
10. Use needs
1. During the operation of the pump body, the maximum particle diameter contained in the internal medium shall not exceed the maximum safe passing particle diameter standard of the pump, otherwise it will cause blockage in the pump body.
2. During the operation of the pump, the air inlet pressure shall not exceed the maximum allowable working pressure of the pump, otherwise, excessive pressure will cause extreme compression of air. Once a failure occurs, it may affect the operation of the pump, and even cause dangerous situations, such as personal injury or property loss.
3. Clean the pipes inside the pump to ensure that the inside is clean and tidy, so that the pump can operate stably and normally.
4. The grounding inside the pump shall be carefully and carefully installed. Some wires with large cross section can be used for screw fixation and reliable grounding, so that the pump will not generate electrostatic sparks during operation and avoid some dangerous situations. Of course, the grounding should also be based on the actual situation, and there are also some special provisions in some special places. After the grounding installation is completed and the pump is used, it is also necessary to regularly check whether the grounding status is stable and reliable as it was at the beginning.
5. In addition, electrostatic sparks may also be generated if the connecting pipe head is loose and hit by transportation, so the diaphragm pump and all connecting pipe joints shall be fastened when the pump is installed. If conditions permit, anti-static hoses can be used.
6. It is better to install the pump in a well ventilated environment. Another point is to keep the pump away from some products that are too hot or flammable and explosive.
7. If the diaphragm pump is in the process of exhaust, be sure not to point the exhaust port at people, or impurities inside may cause harm to human body. In addition, if the pump conveys some flammable or toxic media, the pump should be transferred to some safe areas for medium discharge.
8. The high pressure of the fluid may cause serious casualties and property losses. Please do not carry out any maintenance work on the pump and material pipe system when the pump is pressurized. If maintenance is required, first cut off the air inlet of the pump, open the bypass pressure relief mechanism to depressurize the pipeline system, and slowly loosen the connected pipe joints.
9. Please do not send the pump directly to the manufacturer for repair if transporting harmful and toxic fluid. Properly handle according to local laws and regulations, and use permanent ball fittings to ensure service life.
10. Pump made of aluminum alloy is used for liquid delivery. Please do not use it to deliver liquid containing Fe3+, halogenated hydrocarbon and other substitute hydrocarbon solvents, which will cause corrosion and crack of pump body.
11. Ensure that all parts in contact with the conveying body will not be damaged by the conveyed fluid.
12. Ensure that all operators are familiar with the operation and use and master the precautions for safe use of the pump. If necessary, provide necessary protective equipment.
13. In places where the work is bad, such as construction sites, industrial and mining wastewater discharge, due to the impurities and complex composition in the sewage, the pipeline is easy to be blocked, so the electric pump will be overloaded, the motor will be vulnerable to heat, and the main shaft is easy to break.
QBK5 sanitary diaphragm pump: Complete Guide for Industrial and Hygienic Applications
The QBK5 Sanitary Diaphragm Pump is engineered to deliver high-performance, hygienic fluid transfer for food, beverage, pharmaceutical, and chemical industries. Its sanitary design, corrosion-resistant materials, and leak-free operation ensure contamination-free handling of sensitive fluids. This comprehensive guide covers technical parameters, upgrade options, real-world applications, and storage requirements to maximize the performance and lifespan of the QBK5 pump.
The QBK5 pump is designed for precise, safe, and efficient fluid transfer in demanding sanitary environments. The technical specifications include:
| Parameter | Specification | Notes |
|---|---|---|
| Flow Rate | 0.5 – 5 m³/h | Adjustable based on pump speed and diaphragm type |
| Maximum Pressure | 6 bar | Suitable for medium-pressure sanitary applications |
| Temperature Range | 0°C – 90°C | Compatible with most food and beverage fluids |
| Material | Stainless Steel 316L | Corrosion-resistant, sanitary-grade |
| Connection Type | Tri-Clamp / ISO 2852 | Easy assembly and disassembly for cleaning |
| Diaphragm Material | PTFE / EPDM | Chemical and wear-resistant |
| Motor Power | 0.5 – 2.2 kW | Depends on flow requirements |
Leak-Free Operation: Sanitary diaphragms prevent contamination.
Gentle Pumping: Minimizes shear stress on sensitive fluids.
Versatile Compatibility: Suitable for dairy, juice, pharmaceutical solutions, and chemical liquids.
Low Maintenance: Modular design allows for quick diaphragm replacement.

Variable Speed Drives (VSD): Allows precise flow adjustment, reducing energy consumption.
Advanced Diaphragm Materials: Upgraded PTFE diaphragms improve chemical resistance and extend service life.
Enhanced Seals: High-performance O-rings reduce leakage risk in demanding environments.
Integration with PLC systems for real-time monitoring.
Remote flow control for improved process automation.
Optional sensor-based feedback for pressure and flow monitoring.
Reduced operational downtime.
Increased energy efficiency.
Extended pump service life.
Improved sanitary compliance for critical processes.
Dairy Products: Transfer of milk, cream, and yogurt while maintaining hygiene.
Juices and Beverages: Pumping sensitive fluids without foaming or contamination.
Sterile Solutions: Safe handling of injectable and oral liquids.
Chemical Precursors: Accurate dosing of viscous or corrosive solutions.
Viscous Liquids: Pumps chemicals like glycerin, syrups, and low-corrosive acids.
Precision Transfer: Ensures accurate volumes for processing lines.
| Application | Pump Advantage | Outcome |
|---|---|---|
| Dairy Processing | Gentle flow, sanitary diaphragm | Maintains product integrity |
| Pharmaceutical Production | Leak-free, corrosion-resistant | Compliance with FDA / GMP standards |
| Chemical Transfer | Precise dosing, corrosion-resistant | Reduced waste and safety risk |
Store the pump in a clean, dry, and temperature-controlled environment.
Cover all open ports to prevent dust or debris ingress.
Avoid direct sunlight exposure to protect diaphragms and seals.
Disassemble and clean diaphragms, O-rings, and seals before prolonged storage.
Apply food-grade lubricant to moving parts to prevent corrosion.
Store in original packaging or protective crates for overseas shipments.
Secure the pump during transport to avoid shocks and vibration.
Use reinforced crates or cartons with padding for sensitive components.
Include instruction manuals and inspection certificates with the shipment.
Check diaphragms and O-rings for wear or deformation.
Inspect housing and connections for corrosion or leaks.
Verify proper operation of flow control and motor performance.
Sanitize the pump using approved cleaning agents compatible with PTFE or EPDM materials.
Flush with clean water after each batch to prevent cross-contamination.
Perform CIP (Clean-in-Place) or SIP (Sterilization-in-Place) if integrated in production lines.
Diaphragms: Replace every 6–12 months depending on usage.
O-rings and seals: Inspect quarterly; replace as needed.
Fasteners: Tighten periodically to maintain sanitary integrity.
| Maintenance Task | Frequency | Notes |
|---|---|---|
| Visual Inspection | Weekly | Check for leaks and wear |
| Diaphragm Check | Monthly | Replace if signs of wear |
| O-ring Replacement | Quarterly | Prevent leakage |
| Cleaning & Sanitization | After each batch | Ensure sanitary compliance |
H2: Advantages of QBK5 Sanitary Diaphragm Pump
| Feature | Benefit |
|---|---|
| Sanitary Design | Prevents contamination and meets industry hygiene standards |
| Corrosion-Resistant Materials | Suitable for food, beverage, and chemical applications |
| Leak-Free Operation | Ensures safe handling of liquids |
| Easy Maintenance | Modular parts simplify cleaning and repair |
| Versatile Applications | Compatible with viscous, delicate, and chemical fluids |
The QBK5 Sanitary Diaphragm Pump is an ideal solution for industries requiring precise, hygienic, and reliable fluid transfer. Its robust construction, sanitary design, and upgrade options make it suitable for food, beverage, pharmaceutical, and chemical applications. By following proper storage, handling, and maintenance guidelines, users can maximize pump performance, ensure compliance with hygiene standards, and extend operational lifespan. Real-world applications demonstrate its versatility, energy efficiency, and reliability, making it a trusted choice for modern industrial operations.
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Email:haiwan@haiwanpump.cn
Add:Meiao Street, Qiaoxia Town, Yongjia County Wenzhou City, Zhejiang, China
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