Dwyer Flotect Series V10 Mini-Size Flow Switch, Brass Housing, Normally Open or Closed, Pressure Range 0-1000 psig, 1/2'' Male NPT

This is a good quality flow switch. Works well. Installs easily. The best thing is that it can easily be switched between N.O. and N.C. with ease.

I used this flow switch to replace my ever failing original switch for my aquarite pool salt system. This is a industrial quality switch that is easy to install and very robust. I highly recommend this switch for this application

Fits 1/2 inch threaded pipe. Nicely made. Works well.

Works really well for a domestic hot water system.

Extremely well made. Unfortunately it has a high minimum flow rate (> 2GPM). I could not get it to trigger in my application.

Worked as advertised.

Great product