Effectiveness of water pumping

Hi. I was just wondering if water pumping is really that much more effective that regular pumping and if you can use a regular pump under water. My pump has a brake bleeder style pump, so it handles liquid. Brake fluid being a liquid. Can it handle water pumping, then?

No water! Unless you put a trap in it to trap the water, or are just really care full and don’t suck water in it.

Wasn’t there a water pump already available? Hercules something

Ok. So you are saying that you can’t get water up in the actual pump mechanism, just in the tube? Outside of a bathmate, how do people usually water pump? And is it that much more effective?

You can get water in the pump mechanism. That shouldn’t be a problem. What will be a problem is the gauge. If your brake bleeder has a gauge and it gets water in it, the gauge may suffer as a result.

ok. good to know.

My first DIY water pump was a manual hand squeeze pump with a push release valve. The water went thru the pump in to a can. After 3 months the spring in the valve rusted and air got in the system. conclusion = a pump must be from stainless steel for water pumping.

Got inspired from 15$ wacum pump and ordered from Ebay a cheap ALEAS aquarium air pump with 2 input holes and a regulator button so i can adjust vacum levels. Did the pump mod and how i get 5hg vacum. Bought also a Y and valves aquarium connector kit. i post later a picture from my set. it is very easy to use- hands free.

Your original question was if water pumping was more effective than air pumping.

The main advantage that water pumping is purported to have is the pressure from the water will allow one to pump at somewhat higher pressures, or at the typical pressure for a longer period of time, without fluid build up (edema) causing donuts.

My experience is that this is true, BUT… typically more intense pressure is going to cause donuts in short order.

My suggestion would be: leaving it on longer at a more normal pressure. I’ve found it’s is a better way to go.

Also it takes some getting used to, because you don’t have the gauge (water will destroy the gauge), so you have to estimate the pressure by feel - and it definitely feels different because the water makes the cylinder heavier. Tricky to make sure you don’t get a large bubble in the cylinder as well.

So there will be trial and error.

Helpful?

Thank you sir. A very comprehensive answer. Both parts of my question got answered. Thanks.

Don’t get water in your pump, all you need is an inline fluid jar like this

http://www.wela … /werkzeug_3.htm

if you have a couple of connectors you can make one from a jam jar or similar.

I definitely preferred water pumping for the feel of it and the constant heat but are the results any better ? I honestly cant say.

These sorts of brass pumps are fine to use with water:

Brass Pump

The gun type with the pressure gauge will work, but the gauge will be destroyed.

In which case capernicus1 seems to have a workaround.