Easy to use and install Control and adjust air pressure on any 3M Accuspray spray gun. The pressure gauge is clear and easy to read. The 3M™ Accuspray™ air flow control and regulator valve is an air regulator that controls and adjusts the air pressure of any 3M™ Accuspray™ spray gun.Easily use and set the air pressure thanks to the 3M™ Accuspray™ air flow control and regulator valve. Our valve allows you to control and adjust the air flow on any 3M Accuspray spray gun using its easy - to - read pressure gauge. It can also be used on other manufacturer's spray guns or other equipment where air pressure must be controlled, i.e. the anti - gravel coating gun.