Please, please read up on pumping before experimenting with your dick in such a dangerous way. And refer to redbear's post about the "brake bleeder kit". You should have done some research on pumps before purchasing one.
Hi bluebell2 - Many years ago I received a "hand-me-down" Handsome-Up pump and at that stage I was a student, broke and very happy to receive this article! But I found it to be a total waste of effort. As stated by Waylander, there is no pressure gauge included in the kit to monitor vacuum. The 3 seals in the kit are of poor quality. I fact one seal I used popped under vacuum, probably because you have no control over the amount of vacuum. When the vacuum is created, the sealing end between the penis and rubber tends to creep up the penis shaft as the simple vacuum pump outlet is situated on the top of the cylinder, which very simply in Engineering Knowledge is totally incorrect as it causes more pull on the seal instead of where it should - on the penis. One point of concern was that there is no relief valve fitted to the cylinder. The relief valve is set to allow atmospheric air into the cylinder if the vacuum drawn exceeds a set value. This is a safety valve to prevent injury and an important point to include when choosing any mechanical device. Mind you, I doubt whether the puny bulb pump supplied would be "man" enough to create a high vacuum to cause injury! But jokes aside, although it is difficult to willfully inflict pain upon yourself, keep in mind that your most valuable member which you are trying to train and nurse to great lengths is encased in this contraption and things can go wrong quickly. Always look for any type of safety device or quick release function when purchasing equipment.
As a Marine Engineering Student, I took this piece of equipment to my workshop in an attempt to modify it by changing the position of the evacuation point and adding a proper pistol grip pump with pressure monitor. Forget making modifications - the seals then got themselves all twisted out of shape and under the higher vacuum, the seals came off the rim of the cylinder and the whole project became cumbersome and a failure! I found this cylinder recently in my workshop scrap bin and not to admit defeat and be outdone, I made this into a heat exchanger for my penis which I now use as a warm up method before my excercise routine. I made suitable fittings with rubber hoses to allow warm water from a basin tap to enter the top of the cylinder and drain through the hose fitted at the bottom, this supplies a constant flow of warm water adjusted to my needs! The seal is simply made by using a condom! In fact I do this warm through in the mornings whilst standing at the basin brushing my teeth - (whoever said that men cannot multi-task?)!
I couldn't return the item as I had by then mutilated the original with my attempted modifications!
Sorry to burst your bubble - but follow the advice of PEskeptic - do research before buying. On this site there is so much information and advice relating to equipment and techniques, just kerb your enthusiasm and ask...ask...ask!
I have used this pump and the way i found it works best is to use it in the bath.
First find which silicone sleeve fits you best then you want to fill about a quater of the chamber with warm water (be sure to turn up the hose and air bulb to the side of the chamber so all the water stays in.
Then put yourself into the pump flaccid now once you've acheived an erection tilt the pump up so all the water is at the bottom of the chamber and give it a pump to get out any water that may be in the hose.
Then you can sit or lay in the bath but make sure there is enough water in the bath to submerge the point where the pump rests against the pubic bone.
Now you can start your routine just give it a few pumps to create pressure don't try and squeeze it as many times as you can. If you don't want to do a lot to start with then release the pressure every 30-60 seconds for a total of about 5 mins then build up to ten or so when your comfortable.
If you do go for a few minutes without releasing the pressure you may need to top it up again with one or two pumps.
Also you can roughly gauge the pressure with how many squeezes you give the air bulb and by how it feels. When you take it off after your session do it slowly and you may need to keep pressing the release valve. Please be careful if you haven't used a pump before and don't try to do too much.