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A friend 3D printed a test part of the threaded boss and it works fine (even though it was an FDM printer and the threads were, um, unsightly). The sealing surface is workable. This confirms dimensions enough for me to get on with the endcaps themselves. Those McMaster springs with 14 lb/in...

I misinterpreted the snark! And I totally agree this is way more fun than golf: "Take this wee little ball and put it in that wee little hole" "Like croquet?" "No! We'll put it hundreds of yards away!"

@Coztick I hear the Rube Goldberg critique. That's fair when looking at the CVS at it existed. Yes, the current BC technology does work. Snicker and point if you like. I'm the curious type. It could be fun and possibly there is some value in ditching or augmenting the BC. That's enough...

The DGX over-pressure valve took 2.71lb to activate during a hang-test. I had the valve suspended upside down in a fixture, with stagnant water in the valve body. When enough water was poured in the hanging bucket for the stagnant water to drain out through the valve seal opening, that was the...

Thanks for all your replies, and thanks Luis for posting the articles on the CVS and for posting several descriptions of common issues. Sounds like the CVS widget worked, but was just finicky or unreliable or too bulky for its value. Luis, what other "several flaws" did it have in operation...

Hi all, First post despite lurking for years... Anyone know how much over pressure a typical over-pressure (dump) valve usually takes to actuate? I get that it's a function of the spring and the opening area, but I can't find where anyone who measured the over-pressure. I know it's a random...