What is a pressure regulator?
An air pressure regulator is a mechanical device that controls the air pressure and volume available to the firing valve of a precharged airgun. Because the pressure is always the same, a gun with a regulator shoots with very consistent velocity, plus it may get a few more shots on a fill. As long as there’s enough pressure in the reservoir, it operates as described. When the reservoir pressure drops below the regulated pressure, the regulator remains open all the time and the gun becomes unregulated. It continues to fire, although most shooters notice a change in the discharge sound when their gun is “off the reg.” Without getting into design details, this is how an air regulator functions. As long as the air pressure in the reservoir is greater than the pressure setting for the reg, the reg closes after the regulated pressure has passed into the firing chamber. Once the reservoir pressure drops below the reg pressure setting, the reg never closes and the gun operates as an unregulate
