actually, i've come up with and roughly protoyped something that is pretty much what you described, but with a special "flow diverter" stopcock so that it works with one motion. the piston i used is a double-ended syringe plunger inside of syringe bodies bonded back to back. i appreciate the...
i'm looking for a solution that could come in one of two ways. (please excuse the lack of technical knowledge and wording.)
1. i need a normally off straight through valve that, when activated manually, will allow a given volume of fluid to pass, and then turn off again. schematics and...
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sorry this is so long, but i thought that you "valve people" would be interested, especially considering that a few people in the industry told me this was impossible with all our requirements. both work and i'm going to demo them for our CEO to see if he wants to...
iainuts: i just went back and reread your first post and realized that i didn't understand what you were saying on the first read through.
actually, you're right, the claims of the gauge protector are exactly right on what i am looking for. however, i can't understand from their pictures...
PUMPDESIGNER: actually, we make and sell the transducers to clinics doing these procedures. if a doc forgets to turn the stopcock to protect the transducer its toast and they get to buy another one. i agree that it's a pretty lame way to do it, and that's why i'm working on a solution so the...
iainuts: thanks for laughing at my possible solutions. It only proves that i'm on the right track to solving a problem that most people think has no easy solution. Hey, they laughed at Columbus and Edison.
about the rubber bulb withering up, i agree. however, if the dimensions and bracing...
thanks for the input. the cutaways are helpful. the only problem is that we have to keep in mind these are disposable and have to be dirt cheap. i came up with a design that i think would work, but it would be too expensive to be viable. see...
I'm a newbie here and not an engineer, so please forgive the naivete. We have a sensitive pressure transducer used in a medical procedure that blows at over 120 psi and it's useful range is obviously below that. However, the system it is on can generate pressures up to 1200 psi. Currently...
