The 90 degree three-way sewage coupling is manufactured according to the following standards:
INSO 9119-1 and EN 1329-1
The 90-degree coupling-end tee (three coupling ends) is used to change the path of fluid and waste, and according to the design of the building’s mechanical installation system, it is used for an appropriate angle change in the sewage system and for creating a branch. Since the three ends of the three-coupling-end tee are all spiral/threaded, it also reduces the consumption of connectors in the building’s plumbing.
Features of the 90-degree Coupling-End Tee
The main application of this tee is a 90-degree direction change and its connection to the main pipe, which is highly utilized in the building’s plumbing and sewage system.
The 90-degree coupling-end tee has three coupled (threaded) ends which facilitates connection and branching to the main pipe.
Depending on the material used in its construction, such as: Polika (PVC), Polyethylene, or Metal, the 90-degree coupling-end tee has different applications. One of the most common materials for this tee is Polyethylene, which is suitable for plumbing in residential buildings due to its resistance to corrosion and detergents. The 90-degree coupling-end tee made of metal is also widely used for industrial plumbing because of its high-pressure tolerance.
Similarities and Differences between the Reducing/Regular 90-degree Three Coupling-End Tee
Similarity: The general design of these two is similar, and they both have three coupled ends. Their construction material is also the same depending on their application.
Difference: In the regular 90-degree coupling-end tee, all three ends are the same size, and it is not possible to change the size unless you use a Non-concentric transformation. However, a reducing tee has one end of a different size. The other difference between these two tees is their application: the regular tee is suitable for systems with the same diameter, but Reducing Tee with Triple Socket Ends 90° tee allows for diameter change in the plumbing system.
The 9119 sewage fittings will reach dear consumers in white color and in a carton by Oraman Gharb company.
The technical specifications for the 45-degree coupling-end tee are listed in the table below:
| Color | Scope of application | Quantity in carton | Size |
| white | B-Elbow | soon | 50 |
| white | BD-Vertical Sewage Branch | soon | 75 |
| white | BD-Vertical Sewage Branch | soon | 110 |
| white | BD-Vertical Sewage Branch | soon | 160 |
