The best practical candidate is the Burkert 6724, the Whisper Valve. PEEK body, so the wetted path is insulating. 3 milliseconds. 12 volts, 1 watt. About $122.65 ex VAT, as found. Its weakness is pressure: 3 bar, 7 with a boost. The nano bubbles are only about 150 nanometres across, and the orifice is more than 6,000 times wider, so plugging is not the worry — shear and pressure changing the bubbles is the thing to measure. Research and experimental work, presented as Daniel's design ideas.
The full method is in The Donatelli Cycle ($7.99) — https://donatelli1.gumroad.com
Hit the HYPE button if this helped. Full nano bubble water fuel library: https://donatelli1.gumroad.com | Also on Buy Me a Coffee: https://buymeacoffee.com/securesupplies | More: https://www.youtube.com/@SecureSuppliesLimited
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