Vacuum Stages? huh?

[John]

What is the difference between a single vacuum 3-stage extractor and a dual vacuum 3-stage extractor?


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Donald:
A single 3 stage motor can draw up to 125 inches of lift or 100 cubic feet per minute (c.f.m.). While a dual 3 stage machine (6 stages total) can draw up to 210 inches of water lift @ up to 100 c.f.m or 125 inches of lift @ up to 200 c.f.m.





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I am interested in buying the extractor called sensei by century 400, have been shopping around, and have to make a final decision.

Sensei 3 stage extractor 16 feet hose and a single jet wand.
In addition, for a little more money 25 feet hose and a dual jet wand.
Both the single jet and the dual jet have 100 psi at the tip.

My application is using the extractor to clean my home of 1500 square feet. I plan not clean more than 200 to 300 square feet at a time.

My question was regarding the 25 feet of hose length. Would the performance of the extractor reduce significantly with the extra 10 feet?



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Donald:
Water pressure is exerted equally in all directions. Water pressure is 100 psi when the wand trigger is not pulled. With the trigger squeezed the pressure is 75 to 80 psi. This equipment works fine at 25 ft and with a double jet wand.


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You have me wondering about my Mytee 8003. It is a single 3 stage vac and is rated at 137" lift. Is this possible, or exagarated marketing? Also, what is more powerfull..., 1 2 stage or 1 3 stage?


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Donald:
Three stage vac motor will develop up to 100 c.f.m. and up to 123" to 137" of lift depending on how close you are to sea level. Since more than half of Americans do not live at sea level, 137" is a very slight exaggerated marketing. Three stage vac motors are considerably more powerful than single or dual stage vac motors. A 2 stage vac motor can develop up to 90" of water lift vacuum while a single stage is much less than this.


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Thank you for the info.
I am VERY new to this and trying to "learn as I go" :)

[Vacman3200]

Are you saying the lower you get to sea level the better the waterlift will be or the higher you get to space the better the vacuum will be or the other way around

[John]

Yes, The closer you get to sea level, the higher the water lift would be by the same vacuum motor.

Think about it this way: the higher up you are in space, the less dense the air is, yes? It becomes so sparce, that if you were to go high enough in the atmosphere, there would be less, and less air. So it would be harder for a vac motor to move air high up in the atmosphere (where there isn't as much air) as it would be to move it at sea level (the most dense air you can get before going underwater)

Make sense at all?

[Vacman3200]

Yes I already knew but was just testing

[John]

That's just funny. =D