install took me about 30min and it works pretty good.
the upper limit of my water-flow is only about 11 l/min (reason below) which is also measured more or less correct (~0,6 m³/h) … i just would like to have more digits. the difference between 0.1 or 0.2 m³/h is huge (for my purpose)
my use-case:
when the temperature of the main water pipe to my home is getting too cold (because the last meters are not deep enough in the ground) i just open the valve und let “warmer” water through this section to prevent it from freezing. i installed the SWV at an indoor sink (3/8" input) and therefore i dont have such high flow-rates
this is much more cost-efficient than the “normal” way of heating the pipe (and the soil …). i really like, that i can send the OFF-command together with the ON-command. So it sould turn off, even when HA crashes while the valve is open
30s of waterflow every 30min should be enough (in my case…)