He’d turn in his grave. What few people realise is that he brought unity to Mechanical Engineering, at a time when each Manufacturer used threads of their own design.. And of course, the W is for Mr Whitworth. What he'd make of such crazy designations with his name attached is anyone's' guess.
Was your silicone the platinum stuff from the home brew shops? As the spec seems to read very well.I got it on eBay. If you search for 10mm blue food grade hose it should come up. It was from highpeakconversions.
Unfortunately I don’t know for sure as I silicone tubing from several different suppliers and not sure which is which any more although I would hazard a guess that is probably wasn’t.
I presume the other 2 are a cooling jacket. I didn’t realise beer engines had them.
It was while using the platinum cured stuff I learnt about the porosity of silicone tubing to air (). "Milk hose" (the form often seen for purchase) should be. I think the platinum cured silicone is the only food grade form?
The modern day measurement is mmHG(millimetres Mercury)Very true! Inches of Water Gauge is a scale used for very low pressure differences. Such pressures are usually measured with a water-filled ‘U’ shaped glass tube called a manometer where the difference in height of the liquid in each leg is recorded. One pound per square inch is about equal to 28 inches WG, so 2” or 3” is extremely small indeed. It is quite enough though to move the large rubber diaphragm found in cask breathers.
Here endeth the lesson.