Description
Brass DOT push-to-connect union that joins two runs of 1/2 in. SAE J1131 nylon air-brake tubing without thread or compression hardware. The Midland Industries 620800 carries SAE J2494-3 and FMVSS 49 CFR 571.106 approvals for tractor and trailer air-brake service, with a captive brass eyelet, machined top-end radius for easy tubing insertion, and a stainless collet that locks tubing on contact.
Signs You Need a New Push-to-Connect Union
- Audible air leak at either collet
- Tubing pulls free under pressure or won’t fully seat
- Cracked or crushed body from impact, freeze, or over-tightening
- Slow brake-circuit pressure build or ABS DTCs tied to a leaking line
Specifications
| Manufacturer | Midland Industries |
|---|---|
| Part Number | 620800 |
| Part Type | DOT Push-to-Connect Union (tube to tube) |
| Tube OD (both ends) | 1/2 in |
| Body Material | Brass |
| Pressure Rating | 150 psi (working) |
| Temperature Rating | -40°F to +200°F |
| Standards | SAE J2494-3, DOT FMVSS 49 CFR 571.106, SAE J1131 tubing |
Cross References
This part replaces or is equivalent to the following part numbers:
- Champion / Weatherhead: 02462-08, 1862X8
- Dayco: DQ62DOT-8
- McMaster-Carr: 51915K43
Applications
Used to splice 1/2 in. nylon air-brake tubing on:
- Tractor and trailer service / supply / emergency lines
- Vocational truck pneumatic and air-suspension circuits
- Bus and motorcoach chassis air plumbing
Use only with SAE J1131 nylon air-brake tubing. Inspect collet retention after each tubing reinstallation.
