{"product_id":"brass-compression-90-elbow-double-ferrule-fitting-copper-tube","title":"Brass Compression 90° Elbow Fitting — Double Ferrule Connector for Copper Tube","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBrass Compression 90° Elbow Fitting — Leak-Free Double Ferrule Connection for Copper Tube\u003c\/h2\u003e\n\u003cp\u003eChasing 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.\u003c\/p\u003e\n\u003cp\u003eEach 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.\u003c\/p\u003e\n\u003cp\u003eTypical 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔵\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e 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 \u003cem\u003eouter diameter (OD)\u003c\/em\u003e — not nominal pipe size.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Brass Compression 90° Elbow Fittings\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eDouble Ferrule Sealing System\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTrue 90° Elbow Geometry\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNo Soldering Required\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Size Range — Metric \u0026amp; Fractional Inch\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Quantity Packs\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Brass Compression 90° Elbow Fittings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting Type\u003c\/th\u003e\n\u003ctd\u003eDouble Ferrule Compression 90° Elbow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass (machined)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Style\u003c\/th\u003e\n\u003ctd\u003eCompression (ferrule-type, both ends)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eEqual elbow — same OD both ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Metric Sizes (OD × OD)\u003c\/th\u003e\n\u003ctd\u003e6mm × 6mm, 8mm × 8mm, 10mm × 10mm, 12mm × 12mm, 14mm × 14mm, 15mm × 15mm, 16mm × 16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Fractional Inch Sizes (OD × OD)\u003c\/th\u003e\n\u003ctd\u003e6.35mm × 6.35mm (1\/4\" × 1\/4\"), 9.52mm × 9.52mm (3\/8\" × 3\/8\"), 12.7mm × 12.7mm (1\/2\" × 1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Tube Materials\u003c\/th\u003e\n\u003ctd\u003eCopper, brass; generally compatible with hard stainless steel of matching OD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eSee variant options — typically up to 3,000 psi depending on size and tube wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm for your specific media and pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFerrule Set Included\u003c\/th\u003e\n\u003ctd\u003eYes — front ferrule, back ferrule, and nut included per fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstallation Method\u003c\/th\u003e\n\u003ctd\u003eWrench make-up (no solder, no thread sealant required on tube connection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity Options\u003c\/th\u003e\n\u003ctd\u003e1 Pcs, 3 Pcs, 5 Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShips From\u003c\/th\u003e\n\u003ctd\u003eUS warehouse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eBefore ordering:\u003c\/strong\u003e Always measure your tube's \u003cem\u003eouter diameter (OD)\u003c\/em\u003e 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.\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right size compression elbow fitting for my copper tube?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the fitting size to your tube's \u003cstrong\u003eouter diameter (OD)\u003c\/strong\u003e — 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).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pressure rating do these brass compression fittings typically handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these fittings suitable for outdoor or corrosive environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread or connection standard do these compression elbows use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are \u003cstrong\u003ecompression-style fittings\u003c\/strong\u003e — 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I reuse these fittings after disassembly?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eDouble 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich tube materials are compatible with these fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese fittings are designed primarily for \u003cstrong\u003ecopper tube\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many pieces come in each order, and what's included?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach fitting unit includes the \u003cstrong\u003eelbow body, front ferrule, back ferrule, and compression nut\u003c\/strong\u003e — 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need any special tools to install these compression fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eInstallation 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003esize and quantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"6mm x 6mm \/ 1 Pcs","offer_id":52331520590098,"sku":"LJHDG-SPLDP-1136x1","price":16.52,"currency_code":"USD","in_stock":true},{"title":"8mm x 8mm \/ 1 Pcs","offer_id":52331520622866,"sku":"LJHDG-SPLDP-1137x1","price":19.11,"currency_code":"USD","in_stock":true},{"title":"10mm x 10mm \/ 1 Pcs","offer_id":52331520655634,"sku":"LJHDG-SPLDP-1138x1","price":21.96,"currency_code":"USD","in_stock":true},{"title":"12mm x 12mm \/ 1 Pcs","offer_id":52331520688402,"sku":"LJHDG-SPLDP-1139x1","price":31.76,"currency_code":"USD","in_stock":true},{"title":"14mm x 14mm \/ 1 Pcs","offer_id":52331520721170,"sku":"LJHDG-SPLDP-1140x1","price":39.02,"currency_code":"USD","in_stock":true},{"title":"15mm x 15mm \/ 1 Pcs","offer_id":52331520753938,"sku":"LJHDG-SPLDP-1141x1","price":46.63,"currency_code":"USD","in_stock":true},{"title":"16mm x 16mm \/ 1 Pcs","offer_id":52331520786706,"sku":"LJHDG-SPLDP-1142x1","price":51.39,"currency_code":"USD","in_stock":true},{"title":"6.35mm x 6.35mm \/ 1 Pcs","offer_id":52331520819474,"sku":"LJHDG-SPLDP-1143x1","price":16.31,"currency_code":"USD","in_stock":true},{"title":"9.52mm x 9.52mm \/ 1 Pcs","offer_id":52331520852242,"sku":"LJHDG-SPLDP-1144x1","price":21.69,"currency_code":"USD","in_stock":true},{"title":"12.7mm x 12.7mm \/ 1 Pcs","offer_id":52331520885010,"sku":"LJHDG-SPLDP-1145x1","price":31.21,"currency_code":"USD","in_stock":true},{"title":"6mm x 6mm \/ 3 Pcs","offer_id":52331520917778,"sku":"LJHDG-SPLDP-1136x3","price":45.14,"currency_code":"USD","in_stock":true},{"title":"8mm x 8mm \/ 3 Pcs","offer_id":52331520950546,"sku":"LJHDG-SPLDP-1137x3","price":52.89,"currency_code":"USD","in_stock":true},{"title":"10mm x 10mm \/ 3 Pcs","offer_id":52331520983314,"sku":"LJHDG-SPLDP-1138x3","price":61.46,"currency_code":"USD","in_stock":true},{"title":"12mm x 12mm \/ 3 Pcs","offer_id":52331521016082,"sku":"LJHDG-SPLDP-1139x3","price":90.83,"currency_code":"USD","in_stock":true},{"title":"14mm x 14mm \/ 3 Pcs","offer_id":52331521048850,"sku":"LJHDG-SPLDP-1140x3","price":112.73,"currency_code":"USD","in_stock":true},{"title":"15mm x 15mm \/ 3 Pcs","offer_id":52331521081618,"sku":"LJHDG-SPLDP-1141x3","price":135.52,"currency_code":"USD","in_stock":true},{"title":"16mm x 16mm \/ 3 Pcs","offer_id":52331521114386,"sku":"LJHDG-SPLDP-1142x3","price":149.8,"currency_code":"USD","in_stock":true},{"title":"6.35mm x 6.35mm \/ 3 Pcs","offer_id":52331521147154,"sku":"LJHDG-SPLDP-1143x3","price":44.46,"currency_code":"USD","in_stock":true},{"title":"9.52mm x 9.52mm \/ 3 Pcs","offer_id":52331521179922,"sku":"LJHDG-SPLDP-1144x3","price":60.64,"currency_code":"USD","in_stock":true},{"title":"12.7mm x 12.7mm \/ 3 Pcs","offer_id":52331521212690,"sku":"LJHDG-SPLDP-1145x3","price":89.28,"currency_code":"USD","in_stock":true},{"title":"6mm x 6mm \/ 5 Pcs","offer_id":52331521245458,"sku":"LJHDG-SPLDP-1136x5","price":73.78,"currency_code":"USD","in_stock":true},{"title":"8mm x 8mm \/ 5 Pcs","offer_id":52331521278226,"sku":"LJHDG-SPLDP-1137x5","price":86.7,"currency_code":"USD","in_stock":true},{"title":"10mm x 10mm \/ 5 Pcs","offer_id":52331521310994,"sku":"LJHDG-SPLDP-1138x5","price":101.03,"currency_code":"USD","in_stock":true},{"title":"12mm x 12mm \/ 5 Pcs","offer_id":52331521343762,"sku":"LJHDG-SPLDP-1139x5","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14mm x 14mm \/ 5 Pcs","offer_id":52331521376530,"sku":"LJHDG-SPLDP-1140x5","price":186.44,"currency_code":"USD","in_stock":true},{"title":"15mm x 15mm \/ 5 Pcs","offer_id":52331521409298,"sku":"LJHDG-SPLDP-1141x5","price":224.39,"currency_code":"USD","in_stock":true},{"title":"16mm x 16mm \/ 5 Pcs","offer_id":52331521442066,"sku":"LJHDG-SPLDP-1142x5","price":248.19,"currency_code":"USD","in_stock":true},{"title":"6.35mm x 6.35mm \/ 5 Pcs","offer_id":52331521474834,"sku":"LJHDG-SPLDP-1143x5","price":72.69,"currency_code":"USD","in_stock":true},{"title":"9.52mm x 9.52mm \/ 5 Pcs","offer_id":52331521507602,"sku":"LJHDG-SPLDP-1144x5","price":99.67,"currency_code":"USD","in_stock":true},{"title":"12.7mm x 12.7mm \/ 5 Pcs","offer_id":52331521540370,"sku":"LJHDG-SPLDP-1145x5","price":147.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-02_f239de54-aa3b-4674-87ef-64863d5019a8.jpg?v=1781061072","url":"https:\/\/homediyer.com\/de\/products\/brass-compression-90-elbow-double-ferrule-fitting-copper-tube","provider":"HomeDIYer","version":"1.0","type":"link"}