Installation

Standard tee with dam
POSITION #2
(T90D2)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
27
GREASE TEE 90° (GT90P) / TEE 90 DAM (T90D) (DIS ONLY)
The Grease Tee 90 and the standard Tee 90 with a dam are used to pro-
vide access for clean-out to comply with NFPA 96 requirements. They
are equipped with a 1-1⁄2” (38) high grease dam at the access port.
The access port must be closed with a tee cap (TC). The location of the
access port in the tee is dependent on the orientation of the tee in the
final installation. Access port location is coded as shown in Figure 71.
Figure 71 - Grease tees
Figure 72 - Grease tee Y
Male coupling
Grease dam
Grease tee
POSITION #1
(GT90P1)
Male coupling
Grease dam
POSITION #1
Male coupling
Grease tee
POSITION #2
(GT90P2)
Grease dam
POSITION #2
Male coupling
Grease dam
POSITION #3
Grease tee
POSITION #3
(GT90P3)
Male coupling
Grease dam
Standard tee with dam
POSITION #1
(T90D1)
GREASE TEE Y (DIS ONLY)
1. The Grease Tee Y (GTY) is very useful where the grease duct must
be accessed for clean-out and inspection purposes. See Figure 72.
2. It can be used in place of the Grease Tee 90 (GT90) and provides
excellent access clearance for clean-outs.
3. Clean-outs must be located at all direction changes in the grease
ductwork.
4. Installation is the same as standard tee.
Support
Tee cap (TC)
Grease tee Y