3/8 in. x 1/8 in. Male Flare x Male NPT Tee
3/8 in. x 1/8 in. Male Flare x Male NPT Tee
Sizes in This Series
Brass SAE 45 male flare x male NPT branch tees. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 1/4 in. flare x 1/8 in. MNPT | 10204 | $4.69 | Add to cart |
| 3/8 in. flare x 1/8 in. MNPT (this page) | 10209 | $8.99 | — |
| 1/2 in. flare x 1/4 in. MNPT | 10213 | $16.99 | Add to cart |
Overview
The Midland 10209 is a forged brass branch tee with two 3/8 in. SAE 45-degree male flared run legs and a 1/8 in. male NPT branch outlet. The flared legs run on a 5/8-18 thread and the branch is 1/8-27 NPTF. Rated for 1000 psi and -65°F to 250°F, it taps a threaded port off a 3/8 in. flared tube run.
Technical Specifications
| Manufacturer Part # | 10209 |
| Fitting Type | Branch Tee |
| Connection Size | 3/8 in. flare x 3/8 in. flare x 1/8 in. MNPT |
| Connection Type | SAE 45° Male Flared (x2) x Male NPT |
| Thread Size | 5/8-18 x 1/8-27 |
| Pressure Rating | 1000 psi |
| Temperature Rating | -65°F to 250°F |
Materials of Construction
| Body | Forged Brass |
| For Use With | Copper, Brass, Aluminum, Steel Hydraulic Tubing |
Typical Applications
This tee adds a 1/8 in. NPT branch—for a gauge, switch, sensor, or bleed valve—to a 3/8 in. flared tube run without disturbing the flared joints. It is common in refrigeration, gas, oil, and instrumentation systems. Apply thread sealant to the NPT branch only; the flared legs seal metal-to-metal.
Cross-Reference and Interchange
This 3/8 in. flare x 1/8 in. MNPT tee cross-references to these competitor and industry part numbers: 45-6-2, 145-6-2, 145F-6-2, 245x6x2, 445-6A, 04045-0602, T1-6A, FF145-6-2, LT1-662. Replacing one of these? Match nominal size, connections, and rating, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- SAE 45 vs. Inverted Flare Fittings
- NPT, BSPP & JIC Thread Identification Guide
- Teflon Tape vs. Pipe Dope
- NPT Thread Tightening: Turns Past Hand Tight
Frequently Asked Questions
Which port is threaded?
The 1/8 in. branch is male NPT; both 3/8 in. run legs are SAE 45 male flare.
Do I seal the flared legs?
No. Only the NPT branch takes thread sealant or PTFE tape; the flares seal metal-to-metal.
What can I connect to the branch?
Any 1/8 in. female NPT device—gauge, switch, sensor, or valve.
What is the pressure rating?
1000 psi at ambient temperature with properly flared tubing.
⚠ WARNING: This product can expose you to chemicals including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.