Tees 90°

Plain Tee, 180° Cross Tee & 135° Cross Tee

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Plain Tee
(T-1)

plain_tee

Dimensions to be listed in order of A, D

180° Cross Tee
(T-2-180)

180_cross_tee

Dimensions to be listed in order of A, C, D

135° Cross Tee
(T-2-135)
Typical radial angle shown.
Any angle available.

135_cross_tee

Dimensions to be listed in order of A, C, D

Double Parallel Tee, 90° 4-Branch Cross Tee’s – 90° & 135° 4-Branch Cross

Double Parallel Tee
(T-2-P)

Parallel tee's

Dimensions to be listed in order of A, C, D

90° 4-Branch Cross
(T-4-90)
Typical radial angle shown.
Any angle available.

90 degree branch tee's

Dimensions to be listed in order of A, C, D, E, F

135° 4-Branch Cross
(T-4-135)
Typical radial angle shown.
Any angle available.

hvac branch tee

Dimensions to be listed in order of A, C, D, E, F

180° 4-Branch Cross Tee, Reducing Tee & 180° Reducing Cross Tee

180° 4 Branch Cross
(T-4-180)
Typical radial angle shown.
Any angle available.

high pressure branch cross tee's

Dimensions to be listed in order of A, C, D, E, F

Reducing Tee
(T-1-R)
reducing_tee

Dimensions to be listed in order of A, B, D

180° Reducing Cross
(T-2-R-180)
Typical radial angle shown.
Any angle available.

180_cross_tee

Dimensions to be listed in order of A, B, C, D

   Airflow Tee & Reducing Airflow Tee

Airflow Tee
(AFT-1)

airflow_tee

Dimensions to be listed in order of A, D

Reducing Airflow Tee
(AFT-1-R)

reducing_airflow_tee

Dimensions to be listed in order of A, B, D

Engineering Note

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.

   Conical Tee, Conical Reducing Tee & Bullhead Tee

Conical Tee
(T-1-C)

conical tee's

Dimensions to be listed in order of A, D

Conical Reducing Tee
(C-1-C-R)

conical reducing tee's

Dimensions to be listed in order of A, B, D

Bullhead Tee

bullhead tee's

Dimensions to be listed in order of A, B, C