Yantra Lab Vacuum Hydro Aspirators Filter Pump

5/8" inlet barb awk; leaky cheap gaskets; aspirators need to be one single piece not several loosely screwed into each other, the gaskets are practically outside the fitting anyhow.might work for exceptionally light duty low vacuum requirements?

According to the manufacturer's figures, the maximum vacuum is 420 mm Hg. Because of this, I did not want to take this pump, knowing that water jet pumps give 10-20 mm Hg. But still I bought it, intending to test the pump and return it if the vacuum pump poorly sucks. If the pump is driven without an additional outlet pipe, then yes, it pumps badly. But if a small hose, 30-40 centimeters, is attached to the outlet pipe, then the final pressure is 20 mm Hg, which is close to the ideal water-jet pump. I think if supply colder water and play with the length of the outlet, you can get 10 mm Hg. In short, it is a great pump that has exceeded expectations. The Amazon made a mistake with the numbers. It's like selling a BMW by writing "50 horsepower" instead of the actual 350. Strong buy!

Updated: Having purchased three models from Amazon, I have to admit that this one performs the best.

This is made of magnesium. The photo shows copper reduced from copper sulfate solution with sodium chloride. It took about 5 seconds to form. Don't plan on this lasting a long time if you're using it for anything reactive

The media could not be loaded. This thing will pull as deep of a vacuum as water will allow, as far as I can tell. Took a while, but it got my little vacuum chamber down to around -29 mmHg with room temperature tap water using a little 12v "100 psi" diaphragm pump. Haven't measured the actual outlet pressure of that pump yet.The little plastic check valve thing in the vacuum port doesn't work perfectly. It lets water seep back up into the vacuum line, so you need a valve there. But it's enough to stop an immediate blow-back when you turn the pump off.Very happy overall.