Choosing the right gas pressure regulator
img Choosing the right gas pressure regulator

A gas pressure regulator is a device that maintains the gas pressure in the supply line. It must supply as much gas to the piping system as the loading device can accept. In addition, it must maintain the pressure in the system within acceptable limits to prevent pipe rupture.

The correct choice of gas pressure regulator is essential to ensure the maximum performance of your gas meter. Installing the wrong regulator can result in inaccurate readings and can damage the gas system. When choosing a pressure regulator, consider the following factors.

Materials

Several material options are available today for the production of gas pressure regulators that can be used with different types of gas media. Some of the commonly used materials:

brass;
plastic;
stainless steel;
aluminum alloys.


Aluminum is often used when it is important to obtain the minimum weight of the device. For those looking for inexpensive, affordable gas regulators, plastic is ideal. Stainless steel is used when working with aggressive fluids, at high pressure readings and operating temperatures.

Gas used

It is also important to determine the chemical properties of the gas you will be using. As each gas is different, you must select the appropriate body and seal materials. If you use super-reactive gases such as chlorine, ammonia, hydrogen chloride and phosphine, they can corrode the internal components of standard regulators. Therefore, it is best to use stainless steel regulators in this situation.

Flow rate

Gas meters offer flow rates for calibration and bump testing. Using the regulator at an excessive flow rate can result in “flooding” of the sensors and loss of gas. In the meantime, a regulator with a low flow rate can put additional stress on the pump, which will limit the gas supply to the sensors. Purchasing a flow regulator on request with pumpable meters can ensure that the required amount of gas is supplied to the meter.

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