Review on 💥 Enhanced Control Devices CS25 100 Start Valve for Optimal Performance by Jay Maryland

Use this with my Harbor Freight 21 gallon air compressor that refused to start unless the tank was empty. I took out the stock cold start valve and replaced it with a 1/4" NPT tee, then put the stock valve in the tee and this from Revain. Now with two valves, the compressor can be started with compressed air in the tank , as two valves let it accelerate to full speed without simultaneously driving against an air load and accelerating from zero to full speed - that's what it takes to finally work the way I need it to.