Post #4025236

2026-07-23 02:00 UTC

@skylar@misskey.yandere.love @snappler@poa.st interesting. I was imagining this outside okay so here's a goofy idea. have a small chamber teed off the top of the water line with a solenoid valve underneath it. have a metering pump fill that partially, pressurize it with air at like 2 psi higher than your water line pressure, open bottom solenoid valve to let the pressure force it into the water lines. use a check valve to protect the metering pump from the air pressure that seems like it could be extremely compact

Replies (1)

@skylar@misskey.yandere.love 2026-07-23 02:23

@deprecated_ii@poa.st @snappler@poa.st maybe the air isn't necessary at all have like a fat horizontal section of pipe as the mixing chamber, maybe with some shit shoved in there to make it take a whirly path and mix, shut off flow and add a solenoid on top to vent out the leftover pressure to a drain that opens for like a second, dispense the chemical into the chamber, shut off the fill solenoid, and open the supply solenoid. but that'd require a fixed amount of water every time, or some calculations on how long to run the metering pump. possible, but it means adding a microcontroller. i don't think i could do that smaller than like a 6 inch body with a 20 inch stem off the bottom and a couple pipe fittings on the sides.

Open ##4025235