Thanks for the answers about lowest pressure. I need a unit that will draw down to 25 &micro;m (25 microns). Will this one work? Has anybody drawn that deep of a vacuum?
577916
This vacuum has proven that it can gold a pressure of 28 microns or higher for several hours at a time with no adverse effect on the equipment or material being vacuumed.
1481721
This regulator and gage is designed to work at lower pressures, like a paint gun that works in the 28 to 30 psi range. It is ok if you hook it up on the inlet side to 150 psi, but you usually have the regulator set for 30-50 psi outlet.
393746
Pressure variance is limited to high and low unless there is a governor underneath the hood. Changing pressure is done by changing nozzles which is simple and quick. Best pressure unit I have used
1338366
Please be aware this is the lowest wattage unit Farm Innovators makes. If I were going to be looking at 3 gal. and -20 I would think about a higher wattage unit but I have no experience with it in such extreme conditions.
833225
I would think a lower pressure would just cause it to spray in a smaller area. Otherwise, I don't know.
478863
Make sure it is hooked up correctly (with little hose inside jar coming from the attachment end, not the gun end) and keep the gun level. If you problem is it continually sucking once full press the little pressure release lever until the gauge registers 0 psi vacuum.
158446
I would get a 0-30 psi gauge. It would be more accurate for a low pressure reading.
453314
Depends on how low. My pressure is pretty low as well about 40-45 psi and still works great!
2076860
2.5 would work. I believe a 6 cfm would be better. I started with a 2.5 and had trouble getting to 28hg. the 6cfm does it fast. There is only one valve for suck. The other valve is a thumb release, to release the pressure. I put a 1/4" brass valve and connected a 1/4" npt quick change. then i used a barbed fitting that would be used on a quick change and attached 1/4" vinyl hose. i did the same on the pump for easy breakdown. It is important to have a valve on the suck. This valve shgoul;d be closed when you turn on pump then open. When you are done vacing close valve then turn off pump. This keeps the chamber from receiving contaminant blow-back from pump. This is what i know. Good luck. ps. Contact In Lab Designs (Amber she is very nice) and they will put the valve and quick change on for a fee. then it will be easy to pick up the rest at ACE
1297435
I was lucky enough to have access to a refrigerant vacuum pump and as the system was almost empty I pulled it down to about -30lb and made sure I did not have any measurable leak down over a couple of hours. Filled the system with the 22A and it's been running great for the last couple of months. I would recommend evacuating the system if you can so you don't have two unlike gasses in there.
1651503
There are charts to look at. My read says a size 2 at 1.3 gal per min will give 1500 psi. Look for yourself. The 3 will work but give a lower pressure.
899787
A short explanation may help. A vacuum is negative pressure. The vacuum gauge reads in inches of mercury equal to how many inches in a tube the pump could pick up a column of mercury. Twenty eight (28)to 29 inches is a perfect vacuum. That much vacuum is usually only obtainable with a two stage pump or higher such as one used to evacuate a/c systems. At 26 that is a substantial vacuum and as someone else stated with moisture that is not likely to be higher as the water boils because of the vacuum. Water will boil as low as 30/40 degrees Fahrenheit in a fair vacuum. Twenty six maybe 27 is likely the most a small single stage pump can do, but is still substantial as all but a tiny amount of air is removed. Don't sweat it these things are very good at their job. Hope this helps.
2027254
The instructions say 15 psi is the minimum. I have a 50 gal water barrel set up for watering with a hole about 6" away from the bottom, the barrel is almost full, and it doesn't seem to work with this amount of pressure. Granted, I couldn't get the timer to work from a hose, either.
670055
YES! We have low pressure. It is like hooking up a power washer to a garden hose. There aren't a bunch of settings, but you can adjust it to be less intense. I highly recommend this product. I have had one for over 10 years.
1157666
I ordered it, used it once, returned it. Was the worst design of a vacuum ever! Sorry, can't answer your concern about voltage. I would suggest that you either return it if possible or give to charity.
60665
Dont buy this machine. It hardly has any pressure. I returned mine and the seller gave me an extremely hard time and didnt refund all of my money. It puts out as much pressure as the ones you get for a 10 gallon fish tank. I bought to use for airbrushing my nails and it clogged several times.
1258806
The higher the Micron rating (50) the less likely you are to lose any pressure.The lower the rating (5), you may see a slight drop in pressure.But keep in mind,the lower the rating,the MORE crap is being filtered out. And you have to change filters on a regular basis,dont wait until the filter is is so covered in sludge that you cant tell that it WAS at one time,white.