I have the PSI valve with the screw. To turn down the PSI do I turn it righty tighty?
fevhome

To turn pressure down - you turn bolt counter clock wise
To increse pressure, you turn the botl clockwise.

If this is your water PRV, Make sure you use a water test gauge and adjust you pressuer between 45-60 psi.

Like Milo says, to increase the pressure turn the screw clock wise.
To decrease the pressure turn the screw counter clock wise, good luck.

John