Water Column Pressure For Natural Gas

This is why water column is most often used to measure pressures under 1 psi.

Water column pressure for natural gas. The gpk035 gas pressure test kit is ruggedized for field use and easier to use than a manometer. Checking the incoming natural and propane gas pressure with a manometer for appliances. 1 psi is equal to 27 71 inches of water column. A common operating pressure for natural gas appliances is around 7 inches of water column wc or re stating this in equivalent measure that s 14 9 millibars or 1743 pascals or pa or about 0 25 psi pounds per square inch or about 4 ounces of pressure per square inch.

Inches of water column is typically used to measure low pressure gas systems which is what feeds most appliances. Its diaphragm gauge is calibrated in inches of water column and also shows readings in ounces per square inch. Some gas valves will have a pressure tap on both sides while some only have one on the furnace manifold side. These low pressures are most often read using a manometer or a magnahelic gauge.

Turn the gas off. Gas pressure can be measured in two ways. Wolf 1 2 npt natural gas pressure regulator 3 to 6 water column range 712371 4 4 out of 5 stars 69. This pressure is around 2 psi.

See natural gas appliance pressures for details. This hvac video is about how to check the incoming gas pressure with. This will usually be between 1 to 3 inches of water column. 4 2 out of 5 stars 212.

The gas valve will have a pressure tap located on it. Pounds per square inch psi or inches of water column in. Locate the pressure tap on the gas valve and unscrew the plug. Gas valves are rated at 1 2 psi and if higher pressures are encountered almost certainly diaphragm rupture will occur with a resulting fire or explosion.

There are 28 inches of water in 1 psi so it is a fairly small amount of pressure. The 7 inch water column pressure 1 4 psi is received by the gas valve and reduced by its regulator to a lower pressure that the manifold distributes to the gas orifices. Inches of water column wc inches of water column is the traditional method for measuring natural gas or propane. The high pressure side of hybrid pressure gas systems commonly measured in pounds per square inch.