What happens to the pressure when you turn the regulator adjusting screw in to the right?

When you turn the regulator adjusting screw to the right, you are effectively increasing the spring tension within the regulator. This action allows the regulator to open further, which results in an increase in the flow of gas. As the flow increases, the outlet pressure of the gas also rises in order to maintain a steady and higher delivery pressure to the system.

This is a fundamental principle of how pressure regulators operate; adjusting the screw to the right applies more force to compress the spring, which increases the pressure setting on the downstream side of the regulator. It's important to note that each regulator may have specific characteristics, but the general behavior is consistent across typical gas pressure regulators in brazing applications.

Understanding this mechanism is essential in brazing to ensure adequate pressure is supplied for effective heating and melting of the filler metal without creating unsafe operating conditions.