QF Ball Joint

The QF Ball Joints allow for up to 22° of movement off center. This makes a good fit for systems that have machines with moving dust ports. They are manufactured with Galvanized Steel only, in 4 to 14” diameter, 20, 18, 16, 14ga., and in lengths of 4.5 to 17.5”, all based on the diameter.
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The Quick Fit Ball Joints allow for up to 22 degrees of movement off center. This makes a good fit for systems that have machines with moving dust ports.

QF Ball Joints are manufactured as follows:

  • In 4 to 14 inch diameters, with 20, 18, 16, or 14 gauge Galvanized Steel only and in lengths of 4.5 to 17.5 inches based on the diameter size.
  • The Collars are located on the exterior side of each port and considered as air flow non-directional and have a laser welded longitudinal seam. A raised lap seam and spot weld are used for attaching the collar to the body and no caulking is used
  • Standard QF ends can be changed to Raw with a defined ID dimension (RawID), Raw with a defined OD dimension (RawOD), No Fitting or just a raw end (NoFit), Flexible hose adapter (RawFlex), Flat Flange (FFL), Angle Flange (ANGFL), or Van Stone (VanStone).
Size
in.
Galvanized
ga.
Weight
lbs.
Length (L)
in.
4 20 2.10 9.50
6 20 3.85 11.75
8 18 5.00 14.00
10 18 8.95 14.25
12 16 9.25 15.25
14 14 15.70 17.50
Galvanized Gauge Metal Thickness
Gauge Inches Millimeters
20 0.0396 1.01
18 0.0516 1.31
16 0.0635 1.61
14 0.0785 1.99
NOTES:
  1. 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.
  2. Rock River Silicone Sealant and Red Devil HVAC/R High Temperature Silicone Sealant are not able to be painted.
Item Material Compliance/Rating
QF Ball Joint Galvanized ASTM A653 with a G-90 Rating
304 SS Finish meets ASTM A240
316 SS Finish meets ASTM A240
3M Scotch Seal Metal Sealant 2084 Acetone blend AAMA Specification 801.1
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
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