Timeline for Why are my water pumps becoming noisy all of a sudden
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 29, 2023 at 5:10 | comment | added | niels nielsen | It's called cavitation | |
| Aug 28, 2023 at 17:33 | comment | added | David jones | Ie a backpressure of <50% of the pumps flow output will create violent noises / damage impeller | |
| Aug 28, 2023 at 17:32 | comment | added | David jones | Is there a word for this phenomea I've encountered? Intuitively sounds like it could be called "back pressure", I've failed to see it described it datasheets or elsewhere but obviously exists | |
| Aug 28, 2023 at 17:28 | comment | added | David jones | Il check them.out but they sound expensive | |
| Aug 28, 2023 at 17:27 | comment | added | niels nielsen | your first comment is the key! you need diaphragm pumps instead of impeller pumps, they work much better for higher pressure/lower flow conditions. | |
| Aug 28, 2023 at 17:00 | comment | added | David jones | If flow rate is the issue at hand here, I wonder why the pumps are fine for the initial 30 hours, but once the violent noise starts, they can only operate normally for 1 minute after powering off and on, what inside the motor / internals is changing? | |
| Aug 28, 2023 at 16:55 | comment | added | David jones | I think your answer is in the right direction, but not quite right still... i just put a hosepipe on the outlet of the pump, when the water is flowing freely there's no noise, however, if I squeeze the hosepipe to reduce flow the pump begins making violent noises... therefore it seems to be that my misters may not be allowing enough flow rate. | |
| Aug 28, 2023 at 16:30 | history | answered | niels nielsen | CC BY-SA 4.0 |