The main function of the fluid pressure regulator (also known as pressure reducer) is to minimize pulsation (reduced by 90%) that occurred during the operation process and provide stable spraying pressure and volume. This type of pressure regulator is part of the Air-Operated Diaphragm pump transport set assembly, and it can also be purchased individually.

Test result has proven that the best fluid inlet/outlet pressure ratio is about 3:1, which can achieve almost zero pulsation.