Gas Pipe Size (Industrial Application)


Old 07-28-14, 11:31 AM
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Gas Pipe Size (Industrial Application)

At our plant we currently have 7,005,000 BTU's being supplied.
We are looking to add 3 additional burners which will account for 800,000 BTU's each for an additional BTU of 2,400,000 BTU's.

I expect to run a main trunk line from the regulator @ 2 psi to just above the new equipment. At the equipment I will make 3 drops one to each burner.

Each burner is designed to accept 3.2 inAQ or 0.1152 PSI. The distance is between 150-200 ft.

What size pipe should I run to accommodate?

Natural Gas
Inlet pressure supplied to facility: 2 PSI
Allowable pressure loss: .5 inAQ
Specific Gravity: 0.60
Designed Pipe length: 150-200 ft
Pipe Diameter: ???
Capacity: ??? in CFH or BTU
Old 07-28-14, 12:01 PM
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This should be done by master plumber perhaps with plans drawn up by an engineer. It is outside the scope of this forum.
Old 07-28-14, 01:02 PM
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150 ft of sch 40 1-1/4 pipe at 2 psi will supply 2,817,000 BTU's..

But if you are going 200ft then you will be borderline.. IMO just run 1-1/2 as price difference should be minimal.. This will supply 4,222,000 BTU's

You would then need to run 1" to each burner off the trunk line..

If you figure it right you may be able to run 1-1/2 some distance, say to the first burner, then reduce to 1-1/4...then finally 1" at the end of the run..

You will need a regulator at each appliance I believe since the burners are 3" W.C.

After the regulator you will still need to run 1" to the burner with a 10ft max length of pipe...That 10 ft after the regulator supports 928K btu..

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