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GAS CONNECTORS
Connector Flow Capacity – Per ANSI Z21.24 • CSA 6.10*
Connectors should be sized based upon the appliance gas consumption rate. Select a connector with a capacity equal to or greater than
appliance input rate.
Connector
Series
Nominal
Connector (Inch)
STRAIGHT LENGTH CAPACITY - NATURAL GAS BTU PER HOUR
ID OD 12" 18" 24" 30" 36" 48" 60" 72"
CSSL/CSST/BCSSL 1/4 3/8 48,000 43,800 40,000 36,400 33,400 28,300 24,900 23,100
CSSD/BCSSD 3/8 1/2 102,000 93,100 85,000 77,100 71,100 60,500 53,200 49,100
CSSC 1/2 5/8 180,000 164,200 150,000 136,000 125,000 106,000 93,200 86,000
CSSB 3/4 7/8 290,900 290,900 290,900 270,500 255,900 215,000 197,400 173,900
Connector
Series
Nominal
Connector (Inch) STRAIGHT LENGTH CAPACITY - LPG (PROPANE) BTU PER HOUR
ID OD 12" 18" 24" 30" 36" 48" 60" 72"
CSSL/CSST/BCSSL 1/4 3/8 76,800 70,080 64,000 58,240 53,440 45,280 39,840 36,960
CSSD/BCSSD 3/8 1/2 163,200 148,960 136,000 123,360 113,760 96,800 85,120 78,560
CSSC 1/2 5/8 288,000 262,720 240,000 217,600 200,000 169,600 149,120 137,600
CSSB 3/4 7/8 465,440 465,440 465,440 432,800 409,440 344,000 315,840 278,240
Connector
Series
Nominal
Connector (Inch) STRAIGHT LENGTH CAPACITY - WATTS
ID
OD 0.31m 0.46m 0.61m 0.76m 0.92m 1.22m 1.53m 1.83m
CSSL/CSST/BCSSL 1/4 3/8 14,067 12,837 11,723 10,668 9,789 8,294 7,297 6,770
CSSD/BCSSD 3/8 1/2 29,893 27,285 24,911 22,596 20,837 17,731 15,591 14,390
CSSC 1/2 5/8 52,752 48,122 43,961 39,858 36,634 31,066 27,314 25,380
CSSB 3/4 7/8 85,254 85,254 85,254 79,276 74,997 63,010 57,852 50,965
0.64 Sp Gr, 1000 Btu per cu. ft. (37.2 MJ/m3) gas at 0.5 inch water column (124Pa) pressure drop. Per ANSI Z21.24 • CSA 6.10 for use with
pressures not to exceed 1/2 PSI.
The ow capacities in the above charts are the minimum performance criterion established in ANSI Z21.24 • CSA 6.10 & ANSI Z21.75 • CSA 6.27.
Steel Fitting Torque Values – Per ANSI Z21.24 • CSA 6.10
Tube
Torque (inch pounds)**
Minimum Maximum
CSSL 150 250
CSSD 200 390
CSSC 250 520
CSSB 400 780
**Torque range recommended to tighten gas connector
45° ± 1°
“B” DIA
(Inside Diameter)
“A” DIA
(Outside Diameter)
Connector Series
Size
CSST CSSL CSSD CSSC CSSB
“A” Diameter
Nom OD Tube
3/8" 3/8" 1/2" 5/8" 7/8"
“B” Diameter
Nom ID Tube
1/4" 1/4" 3/8" 1/2" 3/4"
Flare Nut Thread
3/8" OD Tube
9/16-24 Thread
3/8" OD Tube
5/8-18 Thread
1/2" OD Tube
3/4-16 Thread
5/8” OD Tube
15/16-16 Thread
7/8" OD Tube
1-1/16-16 Thread
Dimensional Data
PRODUCT SPECIFICATIONS - GAS CONNECTORS