Description
Composite DOT push-to-connect union tee that joins three runs of 1/2″ SAE J1131 nylon air-brake tubing — splits or combines circuits without threads or compression hardware. The Midland Industries 640800C is rated for SAE J2494-3 push-to-connect service and DOT FMVSS 571.106 air-brake plumbing on tractors, trailers, and vocational trucks.
Signs You Need a New Push-to-Connect Tee
- Audible air leak at any of the three collets
- Tubing pulls free under pressure or won’t fully seat
- Cracked or chalky composite body from UV / road salt exposure
- Slow brake-circuit pressure build or ABS DTCs tied to a leaking line
Specifications
| Manufacturer | Midland Industries |
|---|---|
| Part Number | 640800C |
| Part Type | DOT Push-to-Connect Union Tee |
| Tube OD (all 3 ports) | 1/2″ |
| Configuration | Union tee (3 equal tube ports) |
| Body Material | Composite (glass-reinforced thermoplastic) |
| Standards | SAE J2494-3, DOT FMVSS 49 CFR 571.106, SAE J1131 tubing |
Cross References
- Velvac 016980
- Tectran QL1364-8, 87517
- Phillips 12-96888
- Parker 364PTC-8
- Automann 177.11648
Applications
Used as a 3-way junction on:
- Tractor and trailer service / supply line splits
- Vocational truck air-suspension and ABS branch circuits
- Bus and motorcoach pneumatic accessory plumbing
Use only with SAE J1131 nylon air-brake tubing. Inspect collet retention on all three ports after any tubing reinstallation.
