Description
DOT-rated composite-body push-in union tee that joins three equal-size 1/4″ OD nylon air-brake tubing runs in a tee configuration. The Midland 640400C pairs a glass-reinforced composite shell with brass push-in collet components for vibration, road-salt, and UV resistance, is rated to 145 PSI, and meets D.O.T. FMVSS 49 CFR 571.106 / SAE J2494-3 air brake requirements.
Specifications
| Manufacturer | Midland Industries |
|---|---|
| Part Number | 640400C |
| Part Type | DOT Composite Push-In Union Tee |
| Connections (3) | 1/4″ OD Push-to-Connect x3 |
| Body Material | Composite (glass-reinforced thermoplastic) with brass push-in components |
| Seal Material | Buna-N / Nitrile |
| Working Pressure | Up to 145 PSI |
| Temperature Range | -40°F to 140°F |
| Approvals | D.O.T. FMVSS 49 CFR 571.106; SAE J2494-3 |
| Operating Fluid | Compressed air only (not for liquids) |
Cross References
- Velvac 016940
- Tectran QL1364-4, 87513
- Phillips 12-96444
- Automann 177.11644, 177.12C644
Applications
This composite push-in union tee is designed for compressed-air plumbing on Class 5-8 trucks, tractors, and trailers, including:
- DOT air brake supply and control-line branching
- Air suspension and air-bag manifolding
- Trailer air-line routing and dual-tank tie-ins
- Auxiliary air systems (air horns, axle locks, height-control valves)
For use with DOT-approved 1/4″ OD nylon air-brake tubing. Not for use with liquids or in towing-hitch / driveshaft-to-chassis connections per DOT restrictions. Verify tube outside diameter before ordering.
