A grooved mechanical tee is a versatile pipe fitting used to create branch outlets from a main pipe without cutting or welding. It’s especially popular in fire protection systems, HVAC, and industrial piping due to its fast installation and adaptability.
🔧 What Is a Grooved Mechanical Tee?
A grooved mechanical tee consists of two ductile iron halves:
- Outlet half: Connects to the branch pipe.
- Strap half: Clamps around the pipe.
An oversized hole is drilled into the main pipe, and the tee is clamped over it with a gasket to seal the connection. Bolts secure the assembly, forming a leak-tight branch outlet.
🧱 Key Features
| Feature | Description |
|---|---|
| Material | Ductile iron (galvanized or epoxy-coated) |
| Sizes Available | Typically 2″ to 12″ |
| Pressure Rating | Up to 300 psi (20.7 bar) |
| Certifications | UL Listed / FM Approved / CNBOP / EAC |
| Outlet Types | Grooved, threaded (FNPT/BSPT), or plain-end |
🛠️ Installation Steps
- Drain the pipe and mark the centerline.
- Drill a hole perpendicular to the pipe using a hole saw.
- Place the gasket around the hole.
- Clamp the tee halves over the pipe and gasket.
- Tighten bolts to secure the connection.
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