Negative pressure vacuum pump

Negative pressure vacuum pumps mechanically expel gases from sealed containers, creating an environment below atmospheric pressure. They are used to extract media such as air and water vapor and are employed in laboratories alongside filtration, drying, and other equipment.
Selection
Select the type of pump based on the required vacuum level and pumping speed. Rotary vane pumps are suitable for medium to low vacuum, while scroll pumps are ideal for clean environments. Consider the medium's properties and choose corrosion-resistant materials. Ensure the interface dimensions match the system. Regularly replace oil seals and filters to maintain performance.

Terms

Standards

Instruments

The pumping speed is 60L/min, the ultimate pressure is > 0.085Mpa, the positive and negative pressure is dual-use, the oil-free operation, the noise is lower than 50dB, it can work continuously for 24 hours, and the maintenance is simple.

$ 388.00

Using electromagnetic motor and diaphragm sealing Chamber, maximum Vacuum Level 0.08Mpa, full Teflon material resistant to strong chemical corrosion, free of daily maintenance and long service life.

$ 160.00

Using electromagnetic motor and diaphragm sealing Chamber, the maximum Vacuum Level is 0.08Mpa, full Teflon material is resistant to strong chemical corrosion, free of daily maintenance and long service life, suitable for positive and negative pressure dual-use scenarios.

$ 146.00

The diaphragm sealing Chamber is used to ensure the one-way flow of gas, the maximum Vacuum Level is 0.08Mpa, the pumping rate is 35L/min, and it has the function of positive and negative pressure dual-use. The full Teflon material can resist strong chemical corrosion, free of daily maintenance and long service life.

$ 240.00

Adopting a two-stage design, the pumping speed is up to 60L/min, the ultimate pressure is 0.085MPa, and it can operate continuously for 24 hours without oil. The noise is lower than 50dB, and it has the dual function of positive and negative pressure, making it easy to maintain.

$ 391.00

The transparent vacuum chamber is sturdy and durable, and the automatic constant pressure air supply ensures the stability of the preset Vacuum Level. The range of Vacuum Level is 0~ -90KPa, and the test process is automatically completed with one-click operation, without the need for an external vacuum pump.

$ 877.00

The pumping speed is up to 30L/min and the noise is lower than 50dB. It adopts imported corrosion-resistant rubber diaphragm, supports positive and negative pressure dual-use function, and can operate continuously and stably for 24 hours. It is easy to maintain without lubrication.

$ 388.00

Using negative pressure test principle, Vacuum Level range -90~ 0kPa, vacuum accuracy 2.5; no power supply, compressed air drive, equipped with ultra-thick Organic Glass vacuum Chamber for easy observation of bubbles.

$ 654.00

The pumping speed is up to 30L/min, the ultimate pressure is > 0.08Mpa, the oil-free design and PTFE diaphragm material are used, the noise is lower than 50dB, and it can operate continuously for 24 hours.

$ 472.00

Using negative pressure test principle, Vacuum Level range -90~ 0kPa, equipped with 4.3 inch Touchscreen and three test modes, it can automatically complete the test and display Linear dispersion in real time to meet a variety of standard requirements.

$ 1171.00

The pumping speed is up to 30L/min, the ultimate pressure is > 0.085Mpa, and the imported corrosion-resistant rubber diaphragm is adopted. The oil-free design avoids pollution, and the noise is lower than 50dB. It can work continuously and stably for 24 hours.

$ 287.00

Using PTFE pump head material and coating diaphragm, suitable for strong corrosive gases, pumping speed 20L/min, Ultimate vacuum degree 3~ 8mbar, with pressure relief and cleaning functions, good air tightness and noise less than 58dB.

$ 1579.00

The pumping speed is up to 60L/min, the ultimate pressure is greater than 0.08MPa, and the dual-stage design and PTFE diaphragm material are used to ensure efficient and stable operation. The noise is lower than 50dB, making it suitable for long-term continuous operation.

$ 472.00

Two-stage pump structure is equipped with PTFE material pump head, strong corrosion resistance, maximum Flow rate 125L/min, Ultimate vacuum degree 15-20mbar, no pollution and maintenance, low noise and low temperature rise.

$ 3630.00

Touchscreen control, automatic constant pressure gas to ensure that the experiment in the preset vacuum, Vacuum Level range of 0~ -90KPa, a key operation automatically end the test, stable and durable performance.

$ 1087.00

Articles

Vacuum adsorption coating machine solves the flatness challenge in the transfer of ultra-thin graphene films.
The vacuum adsorption coating machine transfers graphene films smoothly onto target substrates through controlled negative pressure, solving issues such as wrinkling, tearing, and contamination often encountered with traditional methods.
Negative pressure method leak detector for testing vacuum packaging seal integrity
The negative pressure leak detector evaluates the seal integrity of vacuum packaging by simulating a pressure differential environment. The instrument places the sample in a testing chamber and creates a vacuum to form negative pressure. If there is a leak, air or liquid will seep into the packaging, and the result is determined by observing pressure changes or the presence of bubbles.
How to Utilize a Vacuum Adsorption Coating Machine to Solve the Slippage Issue During Coating on Flexible PET Substrates
The vacuum adsorption coating machine stabilizes the flexible PET substrate on the coating platform through negative pressure, effectively addressing the slipping issue during the coating process. Slipping is primarily caused by factors such as the smooth surface of PET, insufficient friction, and interference from coating pressure, which can lead to uneven coatings.
Negative Pressure Method Sealing Tester for Detecting Leakage in Food Packaging
The negative pressure method seal tester creates a pressure difference inside and outside the packaging by evacuating air to detect leaks in food packaging. If there is a leak in the packaging, water will enter the packaging or produce continuous bubbles under the pressure difference, thereby determining the seal integrity. The test requires controlling parameters such as vacuum level and time, and should be conducted in accordance with relevant standards.
Key Points for Operating Vacuum Adsorption Coating Machines on Flexible Substrates
Vacuum adsorption coating technology is a key process in flexible electronics, functional coatings, and the preparation of new materials. This technique uses vacuum negative pressure to ensure that flexible substrates are smoothly and evenly adsorbed onto the coating platform. Combined with precision coating, it effectively reduces defects such as wrinkles and bubbles, thereby enhancing the uniformity and consistency of the coating.
Detailed Explanation of Laboratory Vacuum Adsorption Platform: Flatness is the Cornerstone of Successful Coating
The vacuum adsorption platform is a key device in coating experiments, which stabilizes the substrate by negative pressure adsorption, providing a reference plane for coating. The flatness of the platform surface is crucial, as even minor deviations can lead to defects such as uneven coating thickness or the appearance of streaks.