The adjustment is for when there is resistance on the output. If it keeps cycling at a low flow the adjustment allows for a steady flow instead of the pump constantly turning on and off.
I got one for ro and it wore out in 6 months I had 12 volt I contacted vevor and they said they would send me a new one but I didn't think it was problem on there end so didn't do it but they sale replacement part on amazon 14 dollars
The adjustment is for when there is resistance on the output. If it keeps cycling at a low flow the adjustment allows for a steady flow instead of the pump constantly turning on and off.
I got one for ro and it wore out in 6 months I had 12 volt I contacted vevor and they said they would send me a new one but I didn't think it was problem on there end so didn't do it but they sale replacement part on amazon 14 dollars