To build on what gehardl is saying: It would help if you started off by writing down what are your temperature, pressure, time, and length and diameter of piping (or tubing) that your experiment needs. You also should consider the number of valves and overall arrangement. This could be called "specifying your parameters." For example, look at how the question in thread408-341781 was phrased. Once you've figured out your parameters, try doing a search on some of the manufacturers you've mentioned to see if they sell valves, fittings and tubings that fit within your parameters. Then come back, with a sketch and show us where you're going and ask some more directed questions.
Everyone on here was new once. We're usually happy to help people learn.
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