Brass Compression Flared Fittings — Reliable Quick Coupling for Copper Pipe Connections
Dealing with a leaking copper pipe joint or planning a new plumbing run? Whether you're a homeowner tackling a bathroom repair, an HVAC technician connecting refrigeration line sets, or a DIYer building a water supply system, finding a compression fitting that seals cleanly without soldering saves time and frustration. These brass compression quick coupling connectors are designed for exactly that — a secure, tool-friendly connection you can trust.
Each fitting is machined from solid brass and features a flared compression design that creates a leak-resistant mechanical seal when the nut is tightened. Available in square sizes from 6mm × 6mm (≈ 1/4" × 1/4") up to 22mm × 22mm (≈ 7/8" × 7/8"), plus a reducer option in 6mm × 8mm (≈ 1/4" × 5/16"). Choose from variants with or without compression nuts, and select 1, 3, 5, or 10 pieces per order to match your project scope.
Typical use cases include copper pipe repairs in residential plumbing, refrigeration and air conditioning line set connections, and DIY water supply installations — all scenarios where a no-solder brass compression fitting for copper pipe delivers a clean, code-friendly result.
🔵 Compatibility: Designed for copper pipe with metric OD sizing (6mm–22mm). Verify your pipe's outer diameter before ordering. For imperial pipe, approximate conversions: 6mm ≈ 1/4", 8mm ≈ 5/16", 10mm ≈ 3/8", 12mm ≈ 1/2", 16mm ≈ 5/8", 19mm ≈ 3/4", 22mm ≈ 7/8".
✅ Key Features of These Brass Compression Flared Fittings
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🔩Flared Compression Design — The flared seat creates a tight mechanical seal without soldering, making these brass compression fittings for copper pipe ideal for quick, reliable DIY repairs.
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🟡Solid Brass Construction — Machined from brass for durability, corrosion resistance, and compatibility with potable water systems in residential plumbing applications.
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📐Wide Size Range — Available from 6mm × 6mm up to 22mm × 22mm, plus a 6mm × 8mm reducer, covering the most common copper pipe OD sizes used in plumbing and HVAC line sets.
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🔧No Soldering Required — Install with standard wrenches only — no torch, flux, or solder needed. Reduces installation time and makes these fittings accessible for no-solder copper pipe connection projects.
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🔄With or Without Nuts Options — Choose the complete kit (with compression nuts included) or the fitting body only if you already have matching nuts, giving you flexibility for repairs and new installations alike.
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📦Multi-Pack Quantities — Order 1, 3, 5, or 10 pieces per variant to stock up for larger jobs or keep spares on hand for future copper pipe quick coupling repairs.
📐 Technical Specifications — Brass Compression Quick Coupling Fittings
| Material |
Brass |
| Fitting Type |
Compression quick coupling connector (flared) |
| Compatible Pipe |
Copper pipe (metric OD) |
| Size Options |
6×6mm, 8×8mm, 10×10mm, 12×12mm, 16×16mm, 19×19mm, 22×22mm, 6×8mm (reducer) |
| Size Range (approx. imperial) |
1/4" × 1/4" up to 7/8" × 7/8"; reducer: 1/4" × 5/16" |
| Nut Inclusion |
With nuts or Without nuts (see variant options) |
| Pack Quantity |
1 Pcs / 3 Pcs / 5 Pcs / 10 Pcs |
| Connection Method |
Compression (no soldering required) |
| Finish |
Natural brass |
| Working Pressure |
See variant options / Contact us to confirm |
| Thread Standard |
Contact us to confirm |
| Country of Origin |
Contact us to confirm |
⚠️ Note: Always measure your copper pipe's outer diameter (OD) before selecting a size. If you are unsure which variant suits your application, contact us before ordering.
❓ Frequently Asked Questions
How do I choose the right size compression fitting for my copper pipe?
Match the fitting size to your pipe's outer diameter (OD). For example, a 6mm fitting suits copper pipe with a 6mm OD (approximately 1/4"). If you're connecting two different pipe sizes, choose the reducer variant (e.g., 6mm × 8mm). When in doubt, measure your pipe OD with calipers before ordering.
What is the pressure rating of these brass compression fittings?
Brass compression fittings of this type are generally rated for working pressures up to 200–400 PSI depending on size and installation quality. Always verify the specific pressure requirements of your system and consult a licensed plumber for high-pressure applications.
Can these fittings be used outdoors or in humid environments?
Brass has naturally good corrosion resistance and is suitable for many outdoor and humid environments. However, in highly corrosive or saltwater-exposed settings, additional protection or alternative materials may be advisable. Contact us to confirm suitability for your specific environment.
Are these fittings compatible with metric and imperial copper pipe standards?
These fittings use metric sizing (mm OD). They are generally compatible with metric copper pipe used in plumbing and refrigeration systems. For imperial (inch) pipe, verify the OD conversion — for example, 6mm ≈ 1/4", 8mm ≈ 5/16", 10mm ≈ 3/8", 12mm ≈ 1/2". Contact us to confirm compatibility with your specific pipe standard.
Should I choose the "With Nuts" or "Without Nuts" option?
Choose With Nuts if you need a complete, ready-to-install assembly — the compression nuts are included and pre-matched to the fitting. Choose Without Nuts if you already have compatible nuts on hand or are replacing only the fitting body. For most DIY installations, With Nuts is recommended.
What applications are these brass compression fittings suitable for?
These fittings are typically used in residential and light commercial plumbing, refrigeration line sets, HVAC copper tubing connections, and DIY water supply repairs. They are not generally recommended for gas lines without explicit certification — contact us to confirm suitability for your application.
Do I need special tools to install these compression fittings?
No soldering is required. Installation typically needs only two adjustable wrenches or open-end spanners to tighten the compression nut onto the fitting body. A pipe cutter for clean, square pipe ends is also recommended for a leak-free seal.
🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.
