Gas Regulator Vent Pipe

Use at least the same diameter pipe as vent.

Gas regulator vent pipe.

The opened covering of the umbrella is similar to a diaphragm in a gas regulator. The 325 series regulator with a vent limiter will reduce the pressure to the rated inlet pressure range of the gas appliance regulator. Propane regulators are manufactured with pressure relief devices built inside the regulator body and operate in a similar manner as that of a tank pressure relief valve. Vents not only provide a leak path for gas when a diaphragm ruptures but also allows the diaphragm to breathe and function properly.

For more information visit maxitrol appliance pressure regulator and vent limiter. The vent diameter must be equal to or greater than the diameter of the regulator outlet vent. Emerson has the following recommendations for the installation of vent piping based on csa b149 natural gas and propane installation code. Find gas pressure regulators at grainger to help reduce the pressure of gas supplied from a high pressure cylinder of gas to a workable level.

Chapter 4 gas piping installations international code n d. When it is opened it keeps the water from flowing onto you. Fnpt second stage vent outlet. Vent piping is necessary for many regulator installations but increases the likelihood of harmonic instability in the field.

The 325 must be installed at or near the appliance. When opened there is tension from a spring that is locked into place when in use. The three new vent lines are galvanized pipe 60 ft long and have about five 90 deg elbows. The use of metal pipe metal tubing pvc meeting the requirements of ul 651 or flexible pipe meeting the requirements of ul 1660.

The regulator vent must be piped to the out doors per nfpa 58. If a vent is restricted a regulator s performance will be adversely effected and tend to hunt or not properly control the pressure. If triggered the relief valve will open and allow gas to escape through the regulator vent. Always follow local code requirements in venting regulators.