Windless with a mind of it's own

cdg · Feb 4, 2016

K1W1 said: ↑

Believe it or not a PTO does not provide any pressure even if rotating at warp speed. The pump that's attached to it does not create pressure either. It does however create flow. It is the resistance to flow that creates pressure.
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Thanks K1W1 - I didn't know that (a familiar saying of mine these days....)

Capt J · Feb 4, 2016

cdg said: ↑

I will thanks - not found yet and we've looked everywhere obvious. Seems odd that this boat - which has so many built in redundancy systems, as they pretty much thought of everything - would not have this installed.
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Is there a pressure gauge for the system? If so does it seem to maintain the same pressure?

cdg · Feb 4, 2016

Capt J said: ↑

Yes, more flow, more restriction= more pressure. More pressure generally = more heat. But they work in correlation almost always as the plumbing cannot flow all of the flow the PTO/pump is sending it in most yacht applications. I think on that Expedition yacht everything was adjusted to run at 750 PSI or 900 psi, cannot remember. Hoses were 2" going to most things.
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Most of the lines are SS, but step to 20mm hose at the business end, and yeah maybe 2" at engine end. (Gosh, you know the vessel?). I don't know the set PSI.

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Windless with a mind of it's own

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