Brass Branch Tee
Brass Branch Tee
DOT-certified brass reducing tees enable seamless tubing integration in air brake systems. Featuring a male NPT-threaded port, standard compression port, and smaller compression port, these fittings facilitate secure transitions between different tubing sizes while maintaining leak-proof integrity under 150 PSI operating pressure.
DOT Air Line Compression Fittings
Engineered for pneumatic braking systems, this DOT-certified reducer tee optimizes airflow distribution and pressure management through asymmetric diameter ports. Its space-saving design enables differentiated air supply to subsystems while ensuring FMVSS 121 compliance in confined installations.
1. Optimized Diameter Transition Design
- Step-Configuration Advantage
Differential port sizing (e.g., 1/2″ main vs. 3/8″ branch) with tapered flow paths reduces turbulence, achieving 20-30% lower pressure drop versus standard reducers. - Standard Configurations
| Model | Main Line Ports | Branch Port |
| RBT-12-12-38 | 1/2" × 1/2" | 3/8" |
| RBT-38-38-14 | 3/8" × 3/8" | 1/4" |
- Integrated Flow Control (Optional)
Branch ports feature adjustable throttle orifices (Ø1.0-2.5mm) for precise airflow regulation – ideal for trailer brake timing calibration.
2. Dynamic Pressure Stabilization System
- Pulse Compensation Technology
Annular dampening chambers at branch ports absorb ABS-induced pressure spikes, limiting fluctuations to <±5%. - Dual-Seal Architecture
| Connection Type | Mechanism | Application |
| Main Line | Ferrule Crimp Seal | High-vibration load paths |
| Branch Line | Thread-Compression Hybrid | Differential thermal cycling |
Compare to standard Tee
| Features | Reducer Branch Tee | Standard Tee |
| Pipe Size Configuration | Main/branch reducer | Same diameter at all three ends |
| Flow Control | Optional throttle or regulator chamber | Dependent on external valve adjustment |
| Installation complexity | Reduces need for additional reducers | Need to connect reducers in series to realize the change of diameter |
| Pressure equalization | Built-in buffer structure, branch pressure is more stable | The branch circuit is affected by the fluctuation of pressure of the main pipe |
DOT Air Line Compression Fittings Specification
| Part# | Tube O.D(1*2)*3 | EATON | MAF | GATES | Tectran | Automann | Fairview | Tramec Sloan |
| 1576-6-4 | 3/8×3/8×1/4 | 1464X6X6x4 | 38049 | G32450-0604 | 1364-664 | 177.1464R64 | 1464R-64 | S764AB-6-6-4 |
| 1576-8-6 | 1/2×1/2×3/8 | 1464x8x8x6 | 38057 | 632450-0806 | 1364-886 | 177.1464R886 | 1464R-86 | S764AB-8-8-6 |
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