I use this little powerhouse as part of a vacuum clamping system in my woodshop and it is amazing. Super quiet and strong! Was a little skeptical at first, but it has performed like a champ!
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This item: 2- Stage 50L/m Oil Free Lab Vacuum Pump Oilless Medical Mute Pump HZW-165 (110V)
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It's ok.
Not bad for some things. Had trouble filtering slightly viscous liquids it took a long time. Constantly had to check it turning pump on and off. Sucked holes in a few papers while setting up it is fairly powerful. Have to just dial it in, use more than one paper or even a fritted filter. However like another reviewer the blue knob does nothing, and it stays the same. Also wouldn't hold a vacuum without non-spring check valve. That is the case if the power is off. Seems like a really slow leak. Even with a check valve it leaks but significantly slower. Out of the bottom, fittings, sides, or exhaust I am thinking is where. Despite what some people say here I think this is a piston pump. Guessing based on the way the motor is oriented. Also if you just look through the side you can see the piston. It will stay a stable pressure though when power is on. Testing with another brand gauge it reached 26.5 inHg after I took it apart and fixed the pinched gasket. Another thing in my use will have to depressurize, or get to a certain pressure before it can turn on and work again. Other wise the pump just wont cycle and be stuck. Beats using a hand pump, or nasty oil mist covering everything any day. I did take this apart it is kind of like a diaphragm pump but its not. It relies on a flapper type valve that is not a perfect seal. There is by no means any diaphragm material. For what I want to do this works. Maybe will play around with the fittings at some point. It does not hold a vacuum at a set point for me for more than an hour.
Top reviews from the United States
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Reviewed in the United States on June 12, 2024
Reviewed in the United States on September 15, 2022
Reviewed in the United States on February 25, 2024
It's powerful enough to get the job done; the suction is more powerful then the overpriced vacuums that are marketed specifically for laboratory use.
Works perfect with a Buchner funnel.
Reviewed in the United States on February 25, 2024
There is a review that his a link to the exact adapter you'll need to buy to connect it, but I included pictures to hopefully help out. All you need to do is screw out the included connector and screw in the brass one that needs to be purchased separately.Reviewed in the United States on February 25, 2024
It's powerful enough to get the job done; the suction is more powerful then the overpriced vacuums that are marketed specifically for laboratory use.
Images in this review
Reviewed in the United States on July 30, 2022
Not bad for some things. Had trouble filtering slightly viscous liquids it took a long time. Constantly had to check it turning pump on and off. Sucked holes in a few papers while setting up it is fairly powerful. Have to just dial it in, use more than one paper or even a fritted filter. However like another reviewer the blue knob does nothing, and it stays the same. Also wouldn't hold a vacuum without non-spring check valve. That is the case if the power is off. Seems like a really slow leak. Even with a check valve it leaks but significantly slower. Out of the bottom, fittings, sides, or exhaust I am thinking is where. Despite what some people say here I think this is a piston pump. Guessing based on the way the motor is oriented. Also if you just look through the side you can see the piston. It will stay a stable pressure though when power is on. Testing with another brand gauge it reached 26.5 inHg after I took it apart and fixed the pinched gasket. Another thing in my use will have to depressurize, or get to a certain pressure before it can turn on and work again. Other wise the pump just wont cycle and be stuck. Beats using a hand pump, or nasty oil mist covering everything any day. I did take this apart it is kind of like a diaphragm pump but its not. It relies on a flapper type valve that is not a perfect seal. There is by no means any diaphragm material. For what I want to do this works. Maybe will play around with the fittings at some point. It does not hold a vacuum at a set point for me for more than an hour.
Images in this review
Reviewed in the United States on December 13, 2023
Reviewed in the United States on January 28, 2022
