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Plain Tee
(T-1) |
| Dimensions to be listed in order of A, D |
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180° Cross Tee
(T-2-180) |
| Dimensions to be listed in order of A, C, D |
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135° Cross Tee
(T-2-135)
Typical radial angle shown.
Any angle available. |
| Dimensions to be listed in order of A, C, D |
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Double Parallel Tee, 90° 4-Branch Cross Tee’s – 90°
& 135° 4-Branch Cross |
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Double Parallel Tee
(T-2-P) |
| Dimensions to be listed in order of A, C, D |
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90° 4-Branch Cross
(T-4-90)
Typical radial angle shown.
Any angle available. |
| Dimensions to be listed in order of A, C, D, E, F |
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135° 4-Branch Cross
(T-4-135)
Typical radial angle shown.
Any angle available. |
| Dimensions to be listed in order of A, C, D, E, F |
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180° 4-Branch Cross Tee, Reducing Tee
& 180° Reducing Cross Tee |
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180° 4 Branch Cross
(T-4-180)
Typical radial angle shown.
Any angle available. |
| Dimensions to be listed in order of A, C, D, E, F |
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Reducing Tee
(T-1-R) |
| Dimensions to be listed in order of A, B, D |
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180° Reducing Cross
(T-2-R-180)
Typical radial angle shown.
Any angle available. |
| Dimensions to be listed in order of A, B, C, D |
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Airflow Tee & Reducing Airflow Tee |
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Airflow Tee
(AFT-1)
Recommended for HVAC only.
Close coupling of elbows and branch fittings should be avoided if at all possible. The total pressure loss of two close-coupled fittings will generally be greater than the sum of the individual fitting losses. For example: both the 45° lateral and 45° elbow individually are
proved to be low loss fittings. However, when they are joined to form a 90° branch, the combined performance is not as good as a conical tee or the airflow tee. This is a particularly important point to consider because the airflow tee (this page) or conical tee (next page) is less expensive and
is more compact than the combination lateral-elbow. For best economy, the designer should use the conical tee or combination tee when low branch losses are important; and the straight 90° tee should be used when a higher
loss fitting can be tolerated. |
Reducing Airflow Tee
(AFT-1-R) |
Dimensions to be listed in order of A, D
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| Dimensions to be listed in order of A, B, D |
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Conical Tee, Conical Reducing Tee
& Bullhead Tee |
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Conical Tee
(T-1-C) |
| Dimensions to be listed in order of A, D, |
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Conical Reducing Tee
(C-1-C-R) |
| Dimensions to be listed in order of A, B, D |
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Bullhead Tee |
| Dimensions to be listed in order of A, B, C, |
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