Brass Compression 90° Elbow Fitting — Double Ferrule Connector for Copper Tube

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Brass Compression 90° Elbow Fitting — Double Ferrule Connector for Copper Tube

Name: Brass Compression 90° Elbow Fitting — Double Ferrule Connector for Copper Tube
Brand: HomeDIYer
Price: 16.52 USD
Availability: InStock

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Size: 6mm x 6mm

Amount: 1 Pcs

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Brass Compression 90° Elbow Fitting — Leak-Free Double Ferrule Connection for Copper Tube

Chasing a persistent drip at a tight-angle joint in your copper plumbing or instrumentation line? Whether you're a plumber routing supply lines in a tight cabinet, an HVAC technician making refrigerant connections, or a DIYer upgrading a home water system, a loose or poorly sealed elbow fitting can mean costly water damage or system downtime. These brass compression 90° elbow fittings deliver a reliable, tool-assisted seal without soldering or threading — exactly where you need a clean directional change.

Each fitting consists of a solid brass elbow body, a front ferrule, a back ferrule, and a compression nut — the complete double ferrule assembly needed for one connection. Available in metric sizes from 6mm × 6mm up to 16mm × 16mm (≈1/4" to 5/8") and fractional inch sizes including 6.35mm (1/4"), 9.52mm (3/8"), and 12.7mm (1/2"). Both ports are equal-diameter, making these straight-size equal elbows. Choose from 1, 3, or 5 piece quantity packs to match your project scope.

Typical applications include residential and commercial copper water supply lines, HVAC refrigerant tubing runs, pneumatic instrument tubing, and light industrial process lines where a 90° direction change is needed without soldering. The double ferrule design is widely used in instrumentation and process control tubing for its vibration resistance and reliable re-make capability — making these fittings a practical choice for both new installations and repair work on existing copper tube systems.

🔵 Compatibility: Designed for copper tube. Generally compatible with brass and hard stainless steel tubing of matching outer diameter. Not recommended for soft plastic or PEX tubing without an insert support sleeve. Match fitting size to tube outer diameter (OD) — not nominal pipe size.

✅ Key Features of These Brass Compression 90° Elbow Fittings

🔩Double Ferrule Sealing System — Front and back ferrule design creates a two-stage compression seal that resists vibration loosening and provides a more secure bite on the tube wall than single-ferrule alternatives, making it well-suited for instrumentation and process tubing.
📐True 90° Elbow Geometry — Machined elbow body delivers a precise right-angle direction change for copper tube runs in confined spaces such as wall cavities, equipment enclosures, and under-sink plumbing where straight fittings won't route correctly.
🛠️No Soldering Required — Compression fitting installation uses only a wrench — no torch, flux, or solder needed. This makes these fittings a practical choice for repairs in occupied spaces or anywhere open flame is restricted.
⚙️Solid Brass Construction — Machined from brass bar stock for durability in water, air, and light hydraulic service. Brass offers good machinability, a smooth bore for flow efficiency, and resistance to dezincification in standard potable water applications.
📏Wide Size Range — Metric & Fractional Inch — Available in 6mm, 8mm, 10mm, 12mm, 14mm, 15mm, and 16mm metric sizes, plus 6.35mm (1/4"), 9.52mm (3/8"), and 12.7mm (1/2") fractional inch sizes — covering the most common copper tube ODs used in US and international plumbing and HVAC work.
📦Flexible Quantity Packs — Order 1, 3, or 5 pieces per size to match single-joint repairs or multi-connection installations, reducing leftover hardware and letting you stock exactly what your project requires.

📐 Technical Specifications — Brass Compression 90° Elbow Fittings

Fitting Type	Double Ferrule Compression 90° Elbow
Material	Brass (machined)
Finish	Natural brass (uncoated)
Connection Style	Compression (ferrule-type, both ends)
Configuration	Equal elbow — same OD both ports
Available Metric Sizes (OD × OD)	6mm × 6mm, 8mm × 8mm, 10mm × 10mm, 12mm × 12mm, 14mm × 14mm, 15mm × 15mm, 16mm × 16mm
Available Fractional Inch Sizes (OD × OD)	6.35mm × 6.35mm (1/4" × 1/4"), 9.52mm × 9.52mm (3/8" × 3/8"), 12.7mm × 12.7mm (1/2" × 1/2")
Compatible Tube Materials	Copper, brass; generally compatible with hard stainless steel of matching OD
Working Pressure	See variant options — typically up to 3,000 psi depending on size and tube wall
Temperature Range	Contact us to confirm for your specific media and pressure
Ferrule Set Included	Yes — front ferrule, back ferrule, and nut included per fitting
Installation Method	Wrench make-up (no solder, no thread sealant required on tube connection)
Quantity Options	1 Pcs, 3 Pcs, 5 Pcs
Ships From	US warehouse

⚠️ Before ordering: Always measure your tube's outer diameter (OD) with calipers. Nominal tube sizes (e.g., "1/2 inch copper") do not always match actual OD. Select the fitting size that matches your measured tube OD.

❓ Frequently Asked Questions

How do I choose the right size compression elbow fitting for my copper tube?

Match the fitting size to your tube's outer diameter (OD) — not the nominal pipe size. For example, a 6mm fitting suits 6mm OD copper tube; a 1/4" tube (6.35mm OD) needs the 6.35mm variant. Always measure the tube OD with calipers before ordering. Common conversions: 1/4" = 6.35mm, 3/8" = 9.52mm, 1/2" = 12.7mm, 5/8" ≈ 15.88mm (closest available: 16mm).

What pressure rating do these brass compression fittings typically handle?

Brass double ferrule compression fittings generally handle working pressures up to approximately 3,000 psi (≈207 bar) depending on tube size and wall thickness. Smaller sizes typically support higher pressure ratings. For high-pressure instrumentation or hydraulic applications, contact us to confirm suitability for your specific system parameters.

Are these fittings suitable for outdoor or corrosive environments?

Brass offers good corrosion resistance for most indoor plumbing, HVAC, and light industrial applications involving water, air, and non-aggressive fluids. For highly corrosive, marine, or chemical environments, stainless steel fittings are generally recommended. If you're unsure whether brass is appropriate for your media, contact us to confirm before ordering.

What thread or connection standard do these compression elbows use?

These are compression-style fittings — they connect by compressing a ferrule set onto the tube OD rather than using threaded engagement at the tube. No pipe thread standard (NPT, BSP, etc.) applies to the tube connection itself. The nut threads onto the fitting body to drive the ferrules. If your system requires a threaded port on one end, contact us to confirm compatibility.

Can I reuse these fittings after disassembly?

Double ferrule compression fittings can typically be reassembled once after initial installation. The ferrules deform slightly during first make-up and generally re-seal adequately on the same tube. For critical, high-pressure, or leak-sensitive systems, replacing the ferrule set on reassembly is generally recommended to ensure a reliable seal. The fitting body itself is reusable.

Which tube materials are compatible with these fittings?

These fittings are designed primarily for copper tube and are generally compatible with brass and hard stainless steel tubing of matching OD. They are not recommended for soft plastic, PEX, or corrugated tubing without an insert support sleeve, as the ferrule requires a rigid tube wall to compress against properly.

How many pieces come in each order, and what's included?

Each fitting unit includes the elbow body, front ferrule, back ferrule, and compression nut — the complete assembly for one connection point. Select your quantity (1 Pcs, 3 Pcs, or 5 Pcs) from the variant options above. The 3 Pcs and 5 Pcs packs include that many complete fitting assemblies.

Do I need any special tools to install these compression fittings?

Installation requires only standard open-end or adjustable wrenches — no soldering torch, flux, pipe threader, or specialty tools needed. In most cases, hand-tighten the nut first, then turn an additional 1–1.25 turns with a wrench to seat the ferrules. Always follow the fitting manufacturer's make-up procedure for your specific tube size and wall thickness.

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

Brass Compression 90° Elbow Fitting — Double Ferrule Connector for Copper Tube

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Brass Compression 90° Elbow Fitting — Leak-Free Double Ferrule Connection for Copper Tube

✅ Key Features of These Brass Compression 90° Elbow Fittings

📐 Technical Specifications — Brass Compression 90° Elbow Fittings

❓ Frequently Asked Questions

Brass Compression 90° Elbow Fitting — Double Ferrule Connector for Copper Tube

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