Description
Midland Industries 28207 brass reducing / extender adapter, 3/4″ female pipe (FIP) inlet to 3/8″ male pipe (MIP) outlet, both NPTF threads. Used to step a 3/4″ female port down to a 3/8″ male connection on truck and trailer air, fuel, and oil plumbing. 1.25″ hex; 1.59″ overall length; 0.26 lb. Lead-free brass.
Specifications
| Manufacturer | Midland Industries |
|---|---|
| Part Number | 28207 |
| Part Type | Brass Reducing / Extender Adapter |
| Thread — Inlet (FIP) | 3/4″-14 NPTF |
| Thread — Outlet (MIP) | 3/8″-18 NPTF |
| Hex | 1.25 in |
| Overall Length | 1.59 in |
| Shape | Expander |
| Material | Brass |
| Weight | 0.26 lb |
Cross References
Industry crossover numbers for this size adapter:
- Midland Industries: 28207
- Industry crossover: 120A-EC, 120AH-EC, 3200X12X6, 440044-131280
- SAE callout: SAE 130139 (3/4 in × 3/8 in extender adapter, FIP × MIP, NPTF)
Applications
General-purpose 3/4 in to 3/8 in NPTF pipe step-down for:
- Heavy-duty truck air-system plumbing (governor, dryer, tank ports)
- Diesel fuel-supply / return plumbing on filter heads and fuel tanks
- Lube-system, hydraulic, and pneumatic accessory connections
- Trailer air-line and accessory adapters
Use thread sealant compatible with the system fluid (air, fuel, or oil). Do not over-tighten on tapered NPTF threads — cracking the brass is irreversible.









