The first pic is of an offcycle defrost timer and thermostat I built for a walk in cooler.
The second pic is of a control to turn on/off a well water supply to pre-cool milk. I used a CT off the milk pump to operate a sprinkler valve. I have since changed the valve to an anti-contamination valve to make it NO in case of control failure.
let me know if anyone has suggestions or coments.