Originally Posted by buildtoexcess
martin, really appreciate your work. have ordered mcp35x2 to use w/mcp350's @ 12v & will also undervolt to 10.8-11.2v to sample noise reduction.
you have mentioned max working pressure of tygon 3603 1/2" x 5/8" as being 10 psi @ 73 F & have checked Tygon/St-Gobain tygon specs as follows:
3603 1/2" x 5/8" having 1/16" wall nominal & max continuous temperature not to exceed 165 F is compliant w/ ASTM D1599 test protocol
pls note rather high stretch & expansion properties of 3603 material/resin compound. it is apparent that in order to permit full function with "minimum" expansion at even moderate temp, recommended working pressure was greatly reduced; ie: working pressures calculated at 1:5 ratio relative to BURST pressure - serious built-in safety factor (if one uses this tubing in pathogen level 4 lab or radio isotope lab).
for pc water cooling, with proper clamping, at fluid temp of 95 F "with moderate allowable expansion" 20 psi working pressure should be safe limit.
the 1:5 ratio (nom work'g to burst) is very conservative.
pls, I would like to hear your thoughts, cheers
That fits what I would have guessed, great info!
I have managed to nearly burst tygon with my household pressure on accident before my clamp failed and I ended up with a face full of water. Reminded me of my teenage years filling up surgical hose as a "Water Weenie"...
We have something like 80PSI household shutoff pressure around here though...plenty to do some tubing damage.
Anyhow, sounds like tubing should not be a concern in the 35X2 ranges, that's good:)Edited by Martinm210 - 2/4/12 at 9:20am