## How many inches of water column is natural gas?

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. See NATURAL GAS APPLIANCE PRESSURES for details.

## What is good water column for natural gas?

There are 27.7 inches of water column (wc) pressure in 1 PSI of pressure. So 7″wc is about 1/4 PSI. This is the normal pressure that household natural gas is delivered. The normal delivery on propane (LP), for household use is 11″wc or a little more than 1/3 PSI.

What does water column mean for natural gas?

What is Inches of Water Column? Inches of water column is a measurement of how much force it takes to push a column of water up by a number of inches. It is typically used to measure low-pressure gas systems.

### Is natural gas high or low pressure?

Natural gas is only low-pressure when it is at ¼ psi or 7 inches of water column. Most residential systems are low-pressure in order to provide a safer and more reliable delivery of natural gas. Appliances that need more natural gas often need an upgraded gas line that delivers through a ½ inch gas line.

### What pressure is 11 WC?

WC stands for Water Column and is measured in inches. It is a measurement of pressure under 1 PSI. Most gas companies deliver gas to your home at 11″ WC. 27.7″ WC is equal to 1 PSI.

How do you size a natural gas pipe?

(1) Measure the length of the pipe from the gas meter location to the most remote outlet on the system. (2) Locate that total length in the left-hand column of sizing table*, or the next longer distance where the table does not give the exact length.

#### How do you calculate water column?

PSI to Water Column Conversion Formula To convert PSI to WC, just multiply the PSI measurement by 27.708 to get the measurement in WC. For example, if you divide 5 PSI by 27.708, it converts to about 138.54 inches WC.

#### What is the normal residential gas pressure?

The natural gas pressure of the gas line leading to the home ranges from approximately 1/4 psi to 60 psi, depending on the number of homes or businesses served by the line. This compares to pressures of up to 1,500 psi for large-volume pipelines used to move the gas from the well fields to the local utilities.

How big should the water column be for a natural gas unit?

For most NAT gas units for APW it should be 3.5-5 inches of water column. Most of these specs are on the data plate or in the installation manuals.

## How big is a 100 ft natural gas pipe?

The downstream pressure in a houseline after the meter/regulator is in general in the range of 7 to 11 inches Water Column, or about 1/4 psi. The capacity of a 100 ft natural gas pipe with a nominal diameter 0.5 inches (actual ID 0.622 in) and 0.5 inches WC pressure drop can be calculated as Specific gravity of natural gas is set to 0.60.

## What’s the difference between PSI and water column?

When working on commercial gas fryers, ovens and other equipment, knowing the basics about gas pressure is key. Water column (WC) is the standard unit used to measure natural gas and propane, but there are times you might need to convert WC to pressure per square inch (PSI) or vice versa. Luckily, we can help you out!

What is the gas pressure for water Colum?

Your actual gas pressure will be approx. 2.5psi, the water colum pressure is 5 in w/c. pressures for all appliances are denoted in w/c and not psi. This can be adjusted at the gas valve of the appliance with a w/c guage connected to the manifold access tap.