CONCOA Precision Gas Controls

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Piping 15 to 30 psi

Cu. Ft.
per hour
 Length of Pipe
50
100
250
500
750
1000
1250
1500
2000
100
 ¾" ¾" 1" 1" 1" 1" 1 ¼" 1 ¼" 1 ¼"
200
 ¾" 1" 1" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ½" 1 ½"
300
 1" 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 1 ½" 1 ½" 1 ½"
400
 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 1 ½" 2" 2" 2"
500
 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2 ½"
750
 1 ¼" 1 ½" 1 ½" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½"
1000
 1 ½" 1 ½" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3"
1250
 1 ½" 1 ½" 2" 2 ½" 2 ½" 2 ½" 3" 3" 3"
1500
 1 ½" 2" 2" 2 ½" 3" 3" 3" 3" 3 ½"
1750
 1 ½" 2" 2 ½" 2 ½" 3" 3" 3" 3 ½" 3 ½"
2000
 2" 2" 2 ½" 3" 3" 3" 3 ½" 3 ½" 3 ½"
2500
 2" 2 ½" 2 ½" 3" 3 ½" 3 ½" 3 ½" 3 ½" 3 ½"
3000
 2" 2 1/2' 3" 3 ½" 3 ½" 3 ½" 3 ½" 4" 4"
3500
 2 ½" 2 ½" 3" 3 ½" 3 ½" 3 ½" 4" 4" 4"

 

Piping 31 to 50 psi

Cu. Ft.
per hour
 Length of Pipe
50
100
250
500
750
1000
1250
1500
2000
100
 ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾"
200
 ¾" ¾" ¾" ¾" ¾" 1" 1" 1" 1"
300
 ¾" ¾" ¾" 1" 1" 1" 1" 1" 1"
400
 ¾" ¾" 1" 1" 1" 1 ¼" 1 ¼" 1 ¼" 1 ¼"
500
 ¾" ¾" 1" 1" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼"
750
 ¾" 1" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ½" 1 ½" 1 ½"
1000
 1" 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 1 ½" 1 ½" 1 ½"
1250
 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2"
1500
 1" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2"
1750
 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2"
2000
 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2 ½" 2 ½" 2 ½"
2500
 1 ½" 1 ½" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½"
3000
 1 ½" 1 ½" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"
3500
 1 ½" 1 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3"

 

Piping 51 to 100 psi

Cu. Ft.
per hour
 Length of Pipe
50
100
250
500
750
1000
1250
1500
2000
100
 ½" ½" ½" ½" ½" ½" ½" ¾" ¾"
200
 ½" ½" ½" ¾" ¾" ¾" ¾" ¾" ¾"
300
 ½" ½" ¾" ¾" ¾" 1" 1" 1 ¼" 1 ¼"
400
 ¾" ¾" ¾" 1" 1" 1" 1" 1 ¼" 1 ¼"
500
 ¾" ¾" ¾" 1" 1" 1" 1 ¼" 1 ¼" 1 ¼"
750
 ¾" ¾" 1" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ½"
1000
 ¾" 1" 1" 1 ¼" 1 ¼" 1 ¼" 1 ½" 2" 2"
1250
 1" 1" 1/¼" 1 ¼" 1 ½" 1 ½" 1 ½" 2" 2"
1500
 1" 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2"
1750
 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 2' 2" 2" 2 2"
2000
 1" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2 ½" 2 ½"
2500
 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2 ½" 3"
3000
 1 ¼" 1 ¼" 2 ½" 2" 2" 2" 2 ½" 3" 3"
3500
 1 ¼" 1 ½" 2" 2" 2" 2 ½" 2 ½" 3" 3"

 

 

Service Piping: To assure adequate flow rates, it is very important to select the correct pipe size for the main supply and branch lines of your in-plant gas distribution system. The National Fire Protection Association (NFPA) in it's bulletin NFPA #51 (1987) outlines standards for the installation and operation of Oxygen/Fuel gas systems for welding and cutting. Copies can be obtained by writing to:

National Fire Protection Association Inc.
Batterymarch Park
Quincy, MA 02269