Could please someone tell me how to design laminated ring seal for triple eccentric butterfly valve. Chemical pumpsI have to design laminated ring - stainless steel/PTFE - how many layers, wich one is first, thickness of the layers etc. I may buy them but don't design them. Pneumatic and electric diaphragm pumps New international suppliers usually attend trade shows with a camera and a ruler.OK. Thank you, but where I can see those trade shows.I will buy, but how to produce it. Can you tell me abouth the angle of the sealing ring of the body. Sweage pumps &Sludge pumpsWhen you look at the body one angle is horizontal (0 deg) and the other should be???? Sorry to say this but have to be honest. Nobody but a disgruntled employee is going to give away hard earned technology. Multi-stage pumpsCompanies who have this knowledge have either spent their time hard earned time money testing to learn this information, or have purchased a competitive product and reverse engineered. Either way, it is highly unlikely someone is just going to tell you. You will have to do the work. Slurry pumpsIt doesn't take a disgruntled employee, just find the right business school grad manager who can be convinced he can make more margin by importing, and whoosh! out the door all the hard earned technology will go. Great point. Experienced it first hand many times. Fortunately, most often, only the "how" is sent overseas. The real valuable part "why" usually doesn't. When there is a problem with the outsourced stuff, people come begging for the "why".

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