$15 electric vacuum pump for anyone!

How to adjust suction - see picture attached:

Order is important so first adjust Max, then Min and lastly Rate.

Remove cylinder and replace with a vacuum gauge or manometer. Keep in mind that the cheap vacuum gauges that come on brake bleeder pumps are not very accurate - see:
Anyone using water lift to measure/regulate vacuum?

#1 Adjust Max suction
Rate valve full open
Min suction valve full closed
Max suction full closed
With pump turned on, gauge should read max suction of pump.
Open Max suction valve very slightly and observe gauge. It will not take much opening of this valve to lower suction. This is what has been referred to as a "controlled leak".
Label the valve with tape if necessary so you know which valve is Max suction.

#2 Adjust Min suction
Rate valve full open
Min suction valve full closed
Max suction valve adjusted in step #1
With pump turned on, gauge should read the adjusted max suction of pump (step #1).
Open Min suction valve to full open (big leak) and gauge should fall to Zero. Carefully close the min suction valve (smaller leak) just slightly and observe gauge - it should rise off Zero. Set to desired minimum suction. Label valve with tape - this is the valve you will put your finger over to start and stop a cycle.

#3 Adjust Rate
Rate valve full open
Min suction valve adjusted in step #2
Max suction valve adjusted in step #1
Have a timer (seconds) visible
This step is trial and error and depends on the volume of the cylinder used. Remove the vacuum gauge and replace with cylinder. Enter the cylinder as you normally do. With pump running, watch the timer, listen to the pump and put your finger over the end of the Min suction valve (this is when the labels come in handy). Observe how long it takes for the pump to reach the adjusted maximum suction and release your finger. Repeat the cycle a few times to confirm the time in seconds. Now adjust the Rate Valve to full closed then open just slightly. This should slow down the rate of air leaving or entering the cylinder. Repeat the cycle, observe the timer and adjust the Rate valve to achieve the desired time.

Hope this helps - please report your results!

Your set up is even better than mine! You do with one line what I take two to do! Great job!

Valve setup for multiple levels of vacuum - see picture attached:

SparkyX and other members over the years have discussed progressive pumping schemes sometimes called pyramids or staging or … The idea is to pump at various levels of vacuum over the course of a session. For example, 3 minutes at 3” Hg then 5 minutes at 5” Hg then 7 minutes at 7” Hg. I am not recommending these parameters but just using them as an example. With a hand pump (brake bleeder) this is easy to do because the gauge is visible and the user is constantly adjusting vacuum as necessary. This approach is also possible with the electric pump and a few valves. As mentioned elsewhere on this thread, I like the cheap quarter turn drip irrigation valves available at home improvement stores.

A convenient way to adjust vacuum is to use a vacuum regulator but we can also accomplish the task with a “controlled leak”. For multiple levels of vacuum there needs to be multiple controlled leaks and a way to activate or deactivate each valve.

Refer to the picture attached when following these directions.

Replace the tee fitting (finger control) with a gauge (brake bleeder will work).

Close all valves.

Open Valve V1B then adjust valve V1A to desired vacuum (3”Hg in example). Label valve V1A with tape so you know the setting. Close valve V1B. Move to the next set of valves.

Open Valve V2B then adjust valve V2A to desired vacuum (5”Hg in example). Label valve V2A with tape so you know the setting. Close valve V2B. Move to the next set of valves.

Open Valve V3B then adjust valve V3A to desired vacuum (7”Hg in example). Label valve V3A with tape so you know the setting. Close valve V3B.

Remove the gauge and replace with tee fitting, needle valve, cylinder, etc.

In use you do not touch the “A” valves (V1A, V2A, V3A) as they have been adjusted to desired levels. To activate a particular vacuum level simply open the “B” valve on that level while other “B” valves are closed.

This setup is very inexpensive and saves a lot of time when multiple levels of vacuum are desired.

Keep in mind that you are limited by the capacity of the vacuum pump. Be careful pumping over 5”Hg!

You are a Mad genius! LOL, another great job!

Thanks SparkyX - I posted that just for you! Hope it helps, especially with pumps that far exceed 5” Hg like the 12VDC unit you are using. I am thinking about ordering 1 for myself.

Wow. Cool stuff here bros. I think I’m on to something here because doing this dynamic pump stretching thing with the aid of a vacpump is looking very promising. Funny though, it took us this long to discover it when all we had to do was look to women & their vibrators for the value of machines being used on our junk. lol. Can you imagine a fleshlight/vacpump super bj machine? I can already hear the gears in your heads cranking on that idea. Might cause the end of humanity if someone invents it ,,,,,,,,heading to the patent office now!!!

I had given up pumping a few months ago due to crazy pain I was having in my hands due to constantly using the regular brake bleeder pump for the dynamic stretching routine. I wish I looked into this thread sooner but better late than never I suppose. I went ahead and bought the fish pump a couple days ago in order to test out electric pumping to see if this could be the alternative I was looking for.

I have used it so far for two days and it definitely works for the dynamic pumping routine. Instead of constantly having to use my hands to pump over and over again, everything is reduced to only having to use my finger to plug a tiny hole in a t-coupling which is very convenient to say the least. Mine comes out to 5 hg and even though that is fine, I do wish it was slightly more powerful just in case I ever needed to go any higher than that for whatever reason.

Definitely feels good to be back to pumping again :)

$16.00 no charge for shipping! These babies usually pull about 20 in hg!

That is definitely interesting! Is there a way to adjust how much pressure is used? I have no intention of going that high in hg but I would most likely buy one if I could control how much pressure I put out.

I’m having trouble sourcing the shut off valve’s in mo1258’s diagram.

Would these do the job?

http://www.amaz … /dp/B007ATN2FE/

Joey999 - I would NOT recommend that valve as it has integrated "pushfit" connections. I think plastic valves with barbed ends are less expensive and work better for the tubing commonly used with aquarium pumps. I suggest you take a piece of your tubing with you to hardware stores, plumbing shops and pet stores that sell fish. Here in the USA we have large hardware stores (Home Depot and Lowes) that sell supplies for drip irrigation systems - these small valves are about $1 (US Dollar) each. Pet stores have similar valves but are more expensive. A quick internet search found the following in the UK - you can probably find something locally:
http://www.easy watering.co.uk/ … CRO_FLOW_4.html

Good Luck!

Have you actually read this thread? Post 136 and 138 should give you what you want.

Thanks very much for this.

An update on my pumping fun. Doing the finger controlled vacpumping I just gave myself a little hickie on my index finger. Looks funny. I suppose I should’ve stuck with using my thumb. Ha.

I’ve tried dynamic pumping manually after my normal extender sets. Held 10 seconds at 3 Hg and as slow as possible went up to 6 Hg and hold for 10 seconds, lowered back to 3 Hg again slowly. Hot damn, did my cock become long and fat.

May have to look at electric pumps now as a finisher to my routine.