Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm
Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm
Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm
Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm
Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm
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Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mmFlare Tee Brass Fitting for AC Copper Tube — 8mm & 10mmFlare Tee Brass Fitting for AC Copper Tube — 8mm & 10mmFlare Tee Brass Fitting for AC Copper Tube — 8mm & 10mmFlare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm

Flare Tee Brass Fitting for AC Copper Tube — 8mm & 10mm

HomeDIYer
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By HomeDIYer®

Price:
$11.82 USD
Stock:
In stock (500 units), ready to be shipped

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Description

 

Brass Flare Tee Fittings for AC Copper Tube — Reliable Branch Connections in 8mm & 10mm

When you're routing refrigerant lines for a split-system air conditioner or refrigeration unit, a leaky or mismatched tee fitting can mean hours of rework, refrigerant loss, and a failed pressure test. HVAC technicians and serious DIYers who work with copper tube systems need brass flare tee fittings that seat cleanly, hold under pressure, and don't corrode over time.

Each piece in this listing is a solid brass flare tee fitting available in two sizes: 8mm OD (≈5/16") — Tee #1 and 10mm OD (≈3/8") — Tee #2. The tee body features three flare ports arranged in a T-configuration, allowing you to branch a refrigerant or fluid line in two directions from a single run. Available in packs of 1, 2, 5, 8, or 10 pieces so you can stock exactly what your job requires.

These fittings are well-suited for residential and light commercial split-system AC installations, mini-split branch line connections, refrigeration equipment service, and copper tube plumbing where a branched flare connection is needed. Long-tail use cases include 8mm flare tee fitting for mini split copper line and 10mm brass tee fitting for air conditioning refrigerant line.

ⓘ Compatibility: Designed for copper refrigerant tubing with 8mm or 10mm outer diameter. Uses standard 45° SAE flare connection. Confirm your tube OD and flare standard before ordering.
⚠ Note: If you are unsure which size fits your system, measure your copper tube's outer diameter or check your AC unit's service manual. Contact us to confirm compatibility before purchase.

✅ Key Features of These Brass Flare Tee Fittings for Copper Tube

  • 🧰Solid Brass Construction — Machined from solid brass for durability, corrosion resistance, and reliable performance in refrigerant and fluid line applications.
  • 🔌45° SAE Flare Connection — Standard flare interface compatible with most copper refrigerant tubing and flaring tools used in residential and commercial HVAC/R work.
  • 🕐T-Branch Configuration — Three-port tee design lets you split or branch a copper refrigerant line without additional adapters, simplifying multi-zone AC line routing.
  • 📈Two Size Options — Available in 8mm (≈5/16") and 10mm (≈3/8") to match the most common copper tube ODs used in split-system air conditioning and light commercial refrigeration.
  • 📦Flexible Pack Quantities — Order 1, 2, 5, 8, or 10 pieces to match your project scope — whether you're servicing a single unit or stocking a service van for multiple jobs.
  • 🔧Wrench-Flat Design — Hex flats on the fitting body allow secure tightening with a standard open-end or adjustable wrench, reducing the risk of over-tightening or cross-threading during installation.

📐 Technical Specifications — Brass Flare Tee Fittings

Product Type Flare Tee Fitting
Material Brass
Connection Type 45° SAE Flare (all three ports)
Size — Tee #1 8mm OD (≈5/16")
Size — Tee #2 10mm OD (≈3/8")
Configuration Equal tee (T-shape, 3 ports)
Compatible Tube Type Copper refrigerant / AC tubing
Finish Natural brass
Pack Options 1 / 2 / 5 / 8 / 10 pieces
Pressure Rating See variant options / Contact us to confirm
Application Air conditioning, refrigeration, copper tube plumbing
Country of Origin See variant options

❓ Frequently Asked Questions

What size flare tee fitting do I need for my copper tube?

Match the fitting size to your copper tube's outer diameter. The 8mm Tee #1 (approximately 5/16") is typically used for smaller refrigerant lines and secondary circuits, while the 10mm Tee #2 (approximately 3/8") suits medium-capacity AC systems and primary liquid lines. When in doubt, measure your tube OD with calipers before ordering.

How strong is a brass flare tee fitting under pressure?

Brass flare fittings are generally rated for the working pressures found in residential and light commercial HVAC/R systems. The flare joint creates a metal-to-metal seal that is typically more reliable than compression fittings under vibration and thermal cycling. Always verify the pressure rating against your specific system specifications before installation.

Can these brass fittings be used outdoors or in humid environments?

Brass offers good corrosion resistance in most indoor and sheltered outdoor environments, making it well-suited for standard split-system AC and refrigeration installations. For direct exposure to salt air or highly corrosive industrial conditions, additional protective measures are generally recommended.

Are these fittings compatible with standard flare tools and refrigerant lines?

Yes. These tee fittings use a standard 45° SAE flare connection, compatible with most flaring tools and copper refrigerant tubing used in residential and commercial HVAC/R applications. Please confirm your system uses SAE 45° flare (rather than a metric or JIS flare standard) before ordering.

How many fittings do I need for a typical AC installation?

The number of tee fittings depends on your system layout. A single-zone split system typically requires 1–2 tee fittings, while multi-zone or branched refrigerant line sets may need 5 or more. We offer packs of 1, 2, 5, 8, and 10 so you can order exactly what your project requires — no waste, no shortage.

What is the difference between the 8mm Tee #1 and 10mm Tee #2?

The 8mm Tee #1 is designed for copper tubes with an 8mm outer diameter (approximately 5/16"), commonly used in smaller or secondary refrigerant circuits. The 10mm Tee #2 fits 10mm OD copper tube (approximately 3/8") and is generally used for primary liquid or suction lines in standard residential AC systems.

Can I reuse a brass flare tee fitting after disconnecting it?

Brass flare fittings can generally be disconnected and reconnected a limited number of times, provided the flare seat and threads are undamaged. Inspect the seating surface carefully before reuse. For critical refrigerant containment applications, re-flaring the tube end is recommended to ensure a leak-free seal on reassembly.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

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