QF Bleed-in Valve

QF Bleed-in Valves are used to adjust airflow to balance system by introducing ambient air. They are manufactured in 3 to 24” diameters, 22, and 20 ga. Galv. or 304SS, with an optional 18 ga. Galv., all in 11” lengths.
Login or Create an Account to get Pricing for this part and to Build a Bill of Material List for your Ducting project.

Quick Fit Bleed-in Valves are used to adjust airflow to balance system by introducing ambient air.

QF Bleed-in Valves are manufactured as follows

  • In 3 to 24 inch diameters, with a standard 22, and 20 gauge Galvanized or 304SS Stainless Steel, and an optional 18 gauge Galvanize, all in 11 inch lengths
  • The longitudinal seam is solid laser welded for strength, to reduce leakage
  • Collars are located on the exterior side of each port and considered as air flow non-directional. A raised lap seam and spot weld are used for attaching the collar to the body and no caulking is used
  • All Bleed In Valves are manfactured in 11 inch lengths
  • 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.
304SS
ga.
Weight
lbs.
# of Slots OD
in.
ID
in.
Rolled Edge
nom.in.
3 22 22 3.75 4 3.07 3.00 0.2
4 22[18] 22[20] 4.00 4 3.89 3.82 0.2
5 22[18] 22[20] 4.25 6 4.91 4.84 0.2
6 22[18] 22[20] 4.50 6 5.93 5.86 0.2
7 22[18] 22[20] 4.75 8 6.94 6.87 0.3
8 22[18] 22[20] 5.00 8 7.93 7.86 0.3
9 22[18] 22[20] 5.25 10 8.92 8.85 0.3
10 22[18] 22[20] 5.50 10 9.93 9.86 0.3
11 22[18] 22[20] 5.75 10 10.92 10.85 0.3
12 22[18] 22[20] 6.25 12 11.99 11.92 0.4
13 20[18] 20 6.75 12 13.00 12.92 0.4
14 20[18] 20 7.50 14 13.99 13.91 0.4
15 20[18] 20 8.25 14 14.99 14.91 0.4
16 20[18] 20 10.00 16 16.00 15.92 0.4
17 20[18] 20 11.75 16 17.00 16.92 0.4
18 20[18] 20 13.50 18 17.99 17.91 0.4
20 20[18] 20 15.00 20 20.00 19.92 0.4
22 20[18] 20 18.00 22 22.01 21.93 0.4
24 20[18] 20 22.00 24 23.98 23.90 0.4
Galvanized Gauge Metal Thickness
Gauge Inches Millimeters
22 0.0366 .85
20 0.0396 1.01
18 0.0516 1.31
Stainless Gauge Metal Thickness
Gauge Inches Millimeters
22 0.031 0.79
20 0.0375 0.95
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. For 304 SS metal, bluing may occur at temperatures of 800° F and above.
Item Material Compliance/Rating
QF Bleed-In Valve Galvanized ASTM A653 with a G-90 Rating
304 SS Finish meets ASTM A240
316 SS Finish meets ASTM A240
Copyright © 2018 QF Ducting. All rights reserved.