Product Description

Pneumatic Diaphragm Vacuum Pump for Air High Temperature with Spare Parts

Product introduction

The pneumatic diaphragm pump produced by our company has low noise, never dead, fire and explosion protection,convenient maintenance, and its products are made of aluminium alloy, engineering plastics,cast iron, stainless steel, etc to meet the needs of different users. The company has passed the ISO9001 quality system certification, a number of patent certificates, and has won the unanimous praise of customers. The company has advanced CNC processing pipeline equipment to provide customers with high-quality, fast and efficient solutions. We reassure customers with first-class product quality and satisfy customers with reasonable price of high-quality service.

Product Description

Mode BQG100/0.2 BQG150/0.2 BQG350/0.2 BQG450/0.2
Max Flow(L)/min 133 340 651 897
Rated Pressure 0.6Mpa 0.6Mpa 0.6Mpa 0.6Mpa
Fluid Inlet/Outlet 1″ 1-1/2″ 2″ 3″
Body Material AL AL AL AL
Water pipe fluid cover material (KG) AL8.6KG
Suction 8m 8m 8m 8m
Lift 50-70m 50-70m 50-70m6.4mm 50-70m9.5mm
Max Particle Dimension(mm) 3.2mm 6.4mm BQG350/0.2 BQG450/0.2

Features and advantages
Can transport fluids containing CZPT particles, shear sensitive media, corrosive or CZPT fluids, etc;
No mechanical or packing seal, extremely low maintenance cost;
Strong self priming ability, capable of dry operation;
Smooth operation without dead center;
No fear of pipeline blockage, no need for pipeline protection device;
Can be installed underwater or submerged;
Self regulating flow and head without the need for complex electronic control devices;
Various security certifications are complete;
No power required, pneumatic drive, safe and reliable;


Proportion 1:1
Max flow rate gallon(L)/min 13 ( 168L/min )
Lift(m) 70m
Output volume of each circulation gallon/L 0.11 (0.42)
Air inlet size (internal thread) 1/2″NPT/BSP
Suction and discharge size (inch) DN25(1″)
Max air consumption 0.8m3/min
Max working pressure psi(bar) 125(8.6)
Max particle diameter (inch/mm) 0.125 (3)
Weight pound/kg AL :2 8(13kg)/SS : 43(20kg)/CI : 46(21kg)
Max suction height Inch (m) Dry : 5m  wet : 7m
The noise level PSI:70  71DB(A)

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Proportion 1:1
Max flow rate gallon(L)/min 14(52L/min)
Lift(m) 70m
Output volume of each circulation gallon/L 0.026 (0.098)
Air inlet size (internal thread) 1/4NPT
Suction and discharge size (inch) DN15(1/2″)
Max air consumption 0.4m3/min
Max working pressure psi(bar) 100 (7)
Max particle diameter (inch/mm) 3mm
Weight pound/kg PP 8 KG
Max suction height Inch (m) Dry : 3m Wet : 5m
The noise level PSI:70  71DB(A)

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Proportion 1:1
Max flow rate gallon(L)/min 13(DN15:49L/min )
Lift(m) 30m
Output volume of each circulation gallon/L 0.04(0.15)
Air inlet size (internal thread) 1/4-18NPT/BSP
Suction and discharge size (inch) DN15(1/2″)
Max air consumption 0.2m3/min
Max working pressure psi(bar) 100 (6.8)
Max particle diameter (inch/mm) 3/32 (2.4)
Weight pound/kg PP3.3
Max suction height Inch (m) Dry : 3m Wet : 5m
The noise level PSI:70  71DB(A)

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Application Range


After-sales Service: Online Service
Warranty: 1 Year
Certification: CE
Rated Current: According to Product Size
Voltage: According to Product Size
Material: Aluminum Alloy


vacuum pump

How Do You Maintain and Troubleshoot Vacuum Pumps?

Maintaining and troubleshooting vacuum pumps is essential to ensure their optimal performance and longevity. Here’s a detailed explanation:

Maintenance of Vacuum Pumps:

1. Regular Inspection: Perform regular visual inspections of the pump to check for any signs of damage, leaks, or abnormal wear. Inspect the motor, belts, couplings, and other components for proper alignment and condition.

2. Lubrication: Follow the manufacturer’s guidelines for lubrication. Some vacuum pumps require regular oil changes or lubrication of moving parts. Ensure that the correct type and amount of lubricant are used.

3. Oil Level Check: Monitor the oil level in oil-sealed pumps and maintain it within the recommended range. Add or replace oil as necessary, following the manufacturer’s instructions.

4. Filter Maintenance: Clean or replace filters regularly to prevent clogging and ensure proper airflow. Clogged filters can impair pump performance and increase energy consumption.

5. Cooling System: If the vacuum pump has a cooling system, inspect it regularly for cleanliness and proper functioning. Clean or replace cooling components as needed to prevent overheating.

6. Seals and Gaskets: Check the seals and gaskets for signs of wear or leakage. Replace any damaged or worn seals promptly to maintain airtightness.

7. Valve Maintenance: If the vacuum pump includes valves, inspect and clean them regularly to ensure proper operation and prevent blockages.

8. Vibration and Noise: Monitor the pump for excessive vibration or unusual noise, which may indicate misalignment, worn bearings, or other mechanical issues. Address these issues promptly to prevent further damage.

Troubleshooting Vacuum Pump Problems:

1. Insufficient Vacuum Level: If the pump is not achieving the desired vacuum level, check for leaks in the system, improper sealing, or worn-out seals. Inspect valves, connections, and seals for leaks and repair or replace as needed.

2. Poor Performance: If the pump is not providing adequate performance, check for clogged filters, insufficient lubrication, or worn-out components. Clean or replace filters, ensure proper lubrication, and replace worn parts as necessary.

3. Overheating: If the pump is overheating, check the cooling system for blockages or insufficient airflow. Clean or replace cooling components and ensure proper ventilation around the pump.

4. Excessive Noise or Vibration: Excessive noise or vibration may indicate misalignment, worn bearings, or other mechanical issues. Inspect and repair or replace damaged or worn parts. Ensure proper alignment and balance of rotating components.

5. Motor Issues: If the pump motor fails to start or operates erratically, check the power supply, electrical connections, and motor components. Test the motor using appropriate electrical testing equipment and consult an electrician or motor specialist if necessary.

6. Excessive Oil Consumption: If the pump is consuming oil at a high rate, check for leaks or other issues that may be causing oil loss. Inspect seals, gaskets, and connections for leaks and repair as needed.

7. Abnormal Odors: Unusual odors, such as a burning smell, may indicate overheating or other mechanical problems. Address the issue promptly and consult a technician if necessary.

8. Manufacturer Guidelines: Always refer to the manufacturer’s guidelines and recommendations for maintenance and troubleshooting specific to your vacuum pump model. Follow the prescribed maintenance schedule and seek professional assistance when needed.

By following proper maintenance procedures and promptly addressing any troubleshooting issues, you can ensure the reliable operation and longevity of your vacuum pump.

vacuum pump

Can Vacuum Pumps Be Used for Leak Detection?

Yes, vacuum pumps can be used for leak detection purposes. Here’s a detailed explanation:

Leak detection is a critical task in various industries, including manufacturing, automotive, aerospace, and HVAC. It involves identifying and locating leaks in a system or component that may result in the loss of fluids, gases, or pressure. Vacuum pumps can play a significant role in leak detection processes by creating a low-pressure environment and facilitating the detection of leaks through various methods.

Here are some ways in which vacuum pumps can be used for leak detection:

1. Vacuum Decay Method: The vacuum decay method is a common technique used for leak detection. It involves creating a vacuum in a sealed system or component using a vacuum pump and monitoring the pressure change over time. If there is a leak present, the pressure will gradually increase due to the ingress of air or gas. By measuring the rate of pressure rise, the location and size of the leak can be estimated. Vacuum pumps are used to evacuate the system and establish the initial vacuum required for the test.

2. Bubble Testing: Bubble testing is a simple and visual method for detecting leaks. In this method, the component or system being tested is pressurized with a gas, and then immersed in a liquid, typically soapy water. If there is a leak, the gas escaping from the component will form bubbles in the liquid, indicating the presence and location of the leak. Vacuum pumps can be used to create a pressure differential that forces gas out of the leak, making it easier to detect the bubbles.

3. Helium Leak Detection: Helium leak detection is a highly sensitive method used to locate extremely small leaks. Helium, being a small atom, can easily penetrate small openings and leaks. In this method, the system or component is pressurized with helium gas, and a vacuum pump is used to evacuate the surrounding area. A helium leak detector is then used to sniff or scan the area for the presence of helium, indicating the location of the leak. Vacuum pumps are essential for creating the low-pressure environment required for this method and ensuring accurate detection.

4. Pressure Change Testing: Vacuum pumps can also be used in pressure change testing for leak detection. This method involves pressurizing a system or component and then isolating it from the pressure source. The pressure is monitored over time, and any significant pressure drop indicates the presence of a leak. Vacuum pumps can be used to evacuate the system after pressurization, returning it to atmospheric pressure for comparison or retesting.

5. Mass Spectrometer Leak Detection: Mass spectrometer leak detection is a highly sensitive and precise method used to identify and quantify leaks. It involves introducing a tracer gas, usually helium, into the system or component being tested. A vacuum pump is used to evacuate the surrounding area, and a mass spectrometer is employed to analyze the gas samples for the presence of the tracer gas. This method allows for accurate detection and quantification of leaks down to very low levels. Vacuum pumps are crucial for creating the necessary vacuum conditions and ensuring reliable results.

In summary, vacuum pumps can be effectively used for leak detection purposes. They facilitate various leak detection methods such as vacuum decay, bubble testing, helium leak detection, pressure change testing, and mass spectrometer leak detection. Vacuum pumps create the required low-pressure environment, assist in evacuating the system or component being tested, and enable accurate and reliable leak detection. The choice of vacuum pump depends on the specific requirements of the leak detection method and the sensitivity needed for the application.

vacuum pump

Can Vacuum Pumps Be Used in the Medical Field?

Yes, vacuum pumps have a wide range of applications in the medical field. Here’s a detailed explanation:

Vacuum pumps play a crucial role in various medical applications, providing suction or creating controlled vacuum environments. Here are some key areas where vacuum pumps are used in the medical field:

1. Negative Pressure Wound Therapy (NPWT):

Vacuum pumps are extensively utilized in negative pressure wound therapy, a technique used to promote wound healing. In NPWT, a vacuum pump creates a controlled low-pressure environment within a wound dressing, facilitating the removal of excess fluid, promoting blood flow, and accelerating the healing process.

2. Surgical Suction:

Vacuum pumps are an integral part of surgical suction systems. They provide the necessary suction force to remove fluids, gases, or debris from the surgical site during procedures. Surgical suction helps maintain a clear field of view for surgeons, enhances tissue visualization, and contributes to a sterile operating environment.

3. Anesthesia:

In anesthesia machines, vacuum pumps are used to create suction for various purposes:

– Airway Suction: Vacuum pumps assist in airway suctioning to clear secretions or obstructions from the patient’s airway during anesthesia or emergency situations.

– Evacuation of Gases: Vacuum pumps aid in removing exhaled gases from the patient’s breathing circuit, ensuring the delivery of fresh gas mixtures and maintaining appropriate anesthesia levels.

4. Laboratory Equipment:

Vacuum pumps are essential components in various medical laboratory equipment:

– Vacuum Ovens: Vacuum pumps are used in vacuum drying ovens, which are utilized for controlled drying or heat treatment of sensitive materials, samples, or laboratory glassware.

– Centrifugal Concentrators: Vacuum pumps are employed in centrifugal concentrators to facilitate the concentration or dehydration of biological samples, such as DNA, proteins, or viruses.

– Freeze Dryers: Vacuum pumps play a vital role in freeze-drying processes, where samples are frozen and then subjected to vacuum conditions to remove water via sublimation, preserving the sample’s structure and integrity.

5. Medical Suction Devices:

Vacuum pumps are utilized in standalone medical suction devices, commonly found in hospitals, clinics, and emergency settings. These devices create suction required for various medical procedures, including:

– Suctioning of Respiratory Secretions: Vacuum pumps assist in removing respiratory secretions or excess fluids from the airways of patients who have difficulty coughing or clearing their airways effectively.

– Thoracic Drainage: Vacuum pumps are used in chest drainage systems to evacuate air or fluid from the pleural cavity, helping in the treatment of conditions such as pneumothorax or pleural effusion.

– Obstetrics and Gynecology: Vacuum pumps are employed in devices used for vacuum-assisted deliveries, such as vacuum extractors, to aid in the safe delivery of babies during childbirth.

6. Blood Collection and Processing:

Vacuum pumps are utilized in blood collection systems and blood processing equipment:

– Blood Collection Tubes: Vacuum pumps are responsible for creating the vacuum inside blood collection tubes, facilitating the collection of blood samples for diagnostic testing.

– Blood Separation and Centrifugation: In blood processing equipment, vacuum pumps assist in the separation of blood components, such as red blood cells, plasma, and platelets, for various medical procedures and treatments.

7. Medical Imaging:

Vacuum pumps are used in certain medical imaging techniques:

– Electron Microscopy: Electron microscopes, including scanning electron microscopes and transmission electron microscopes, require a vacuum environment for high-resolution imaging. Vacuum pumps are employed to maintain the necessary vacuum conditions within the microscope chambers.

These are just a few examples of the wide-ranging applications of vacuum pumps in the medical field. Their ability to create suction and controlled vacuum environments makes them indispensable in medical procedures, wound healing, laboratory processes, anesthesia, and various other medical applications.

China Best Sales Pneumatic Diaphragm Vacuum Pump for Air High Temperature with Spare Parts   with Hot selling	China Best Sales Pneumatic Diaphragm Vacuum Pump for Air High Temperature with Spare Parts   with Hot selling
editor by CX 2023-11-09