Turn off the electricity to the well at the main breaker.
Install a T-fitting into your pipe that comes from the well to the house. Install the T-fitting after the check valve.
Run piping from the new end of the T-fitting to your pressure tank. Wrap Teflon pipe thread tape three to four times around the end, wrapping the threads fully.
Screw the end into the pressure tank with your plumber's wrench.
Turn the system back on and test for leaks.