Adjustable Nipple 18ga
18 gauge QF Adjustable Nipple should be specified for length adjustments when using 18 gauge pipe. Includes black nitrile O-ring for sealing (red silicone available for high temperature applications). Only made in galvanized steel.
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Quick Fit (QF) Adjustable Nipples 18 gauge are used to provide variable length adjustments in straight lines of heavier gauge QF pipe. Specify this version for length adjustments in 18 gauge pipe. This version comes with a black nitrile O-ring for seal. However, you can specify a red silicone O-ring for higher temperature applications.
QF Adjustable Nipples 18 gauge are manufactured as follows:
- In Galvanized metal only
- With rolled QF End diameters from 4 to 24 inches
- Construction: Longitudinal seam is laser welded.
| Size
in. |
Weight
lbs. |
Length (L)
in. |
OD
in. |
ID
in. |
Rolled Edge
nom. in. |
|---|---|---|---|---|---|
| 4 | 1.68 | 11.375 | 3.93 | 3.83 | 0.02 |
| 5 | 2.08 | 11.375 | 4.94 | 4.84 | 0.02 |
| 6 | 2.56 | 11.375 | 5.96 | 5.86 | 0.02 |
| 7 | 3.84 | 11.125 | 6.96 | 6.86 | 0.3 |
| 8 | 4.32 | 11.125 | 7.95 | 7.85 | 0.3 |
| 9 | 4.88 | 11.125 | 8.95 | 8.85 | 0.3 |
| 10 | 5.44 | 11.125 | 9.95 | 9.85 | 0.3 |
| 11 | 6.08 | 11.125 | 10.94 | 10.84 | 0.3 |
| 12 | 6.72 | 10.875 | 12.04 | 11.94 | 0.4 |
| 13 | 6.25 | 10.875 | 13.05 | 12.95 | 0.4 |
| 14 | 7.78 | 10.875 | 14.04 | 13.94 | 0.4 |
| 15 | 8.31 | 10.875 | 15.04 | 14.94 | 0.4 |
| 16 | 8.84 | 10.875 | 16.04 | 15.94 | 0.4 |
| 17 | 9.38 | 10.875 | 17.05 | 16.95 | 0.4 |
| 18 | 9.91 | 10.875 | 18.04 | 17.94 | 0.4 |
| 20 | 10.77 | 10.875 | 20.04 | 19.94 | 0.4 |
| 22 | 11.70 | 10.875 | 22.05 | 21.95 | 0.4 |
| 24 | 12.90 | 10.875 | 24.02 | 23.92 | 0.4 |
Galvanized Gauge Metal Thickness
| Gauge | Inches | Millimeters |
|---|---|---|
| 18 | 0.0516 | 1.31 |
NOTES:
- At temperatures ranging between 390° F and 480° F, the zinc-iron alloy layers in the galvanized steel will continue to provide a high level of protection from corrosion. However, there may be some peeling, changes in mechanical properties, and reduction in the corrosion protection. Recommended maximum service temperature is 390° F.
- For 304 SS metal, bluing may occur at temperatures of 800° F and above.
| Item | Material | Compliance/Rating |
|---|---|---|
| QF 18 Gauge Adjustable Nipple | Galvanized | ASTM A653 with a G-90 Rating |
| 3M Scotch Seal Metal Sealant 2084 | Polyurethane | ASTM E162 ASTM E662 Bombardier SP 800-C |
| Rock River Silicone Sealant | 100% Silicone | ASTM C920 Class 25 TT-S-00230C Class A and TT-S-001543A FDA No. 421 CFR 117.2600, conforms to FDA requirements |
| Red Devil HVAC/R High Temperature Silicone Sealant | Silicone | ASTM C920 Class 25 TT-S-00230C Class A and TT-S-001543A CEBTP 432.6 140-2 Mil Spec 46106A CGSB 19C9-9B DIN 18540 Part 2 Orex 150031-2 |
| O-ring, black | Buna-N | 60 Duro-Meter hardness |
| O-ring, red | Silicone rubber | ZZ-R-765 Class 2A 2B grade 70 AMS-3304E 3304F and 3303G FDA approved |