8 Purpose

Gas pressure regulators have two main purposes:

• To reduce the supply pressure to a safe operating pressure for the building or connected appliance(s).
• To maintain a constant downstream pressure, regardless of changes in the gas flow or upstream pressure.

The regulators downstream pressure can typically be adjusted within a certain range to match the system requirements.

Some regulators may also provide overpressure protection to prevent gas pressure in the system from exceeding the rating of the system components.