{"product_id":"brass-compression-fittings-4-way-cross-coupling-connector-copper-tube","title":"Brass Compression Fittings Equal 4-Way Cross Coupling 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 4-Way Cross Fitting — Reliable Equal-Flow Connections for Copper Tube\u003c\/h2\u003e\n\u003cp\u003eWhen a plumbing run needs to branch in four directions at once — whether you're building a radiant heating manifold, splitting an HVAC refrigerant line, or distributing water across an irrigation grid — a poorly made junction fitting is the last thing you want leaking inside a wall or ceiling. These \u003cstrong\u003ebrass compression fittings equal 4-way cross coupling connectors\u003c\/strong\u003e are built for DIYers, HVAC technicians, and plumbers who need a dependable, solder-free solution the first time.\u003c\/p\u003e\n\u003cp\u003eEach fitting is machined from solid brass and uses a standard compression mechanism — nut, ferrule, and body — that grips the outer diameter of the copper tube without heat or flux. Available in four sizes: \u003cstrong\u003e6mm (≈1\/4\")\u003c\/strong\u003e, \u003cstrong\u003e8mm (≈5\/16\")\u003c\/strong\u003e, \u003cstrong\u003e9.52mm (3\/8\")\u003c\/strong\u003e, and \u003cstrong\u003e10mm (≈3\/8\" metric)\u003c\/strong\u003e. Sold individually or in value bundles of 3 or 5 pieces to suit single repairs or larger installations.\u003c\/p\u003e\n\u003cp\u003eTypical applications include residential and light commercial plumbing branch points, HVAC refrigerant distribution manifolds, underfloor heating loop connections, and custom copper tube fabrication projects where a \u003cstrong\u003e4-way cross compression fitting for copper pipe\u003c\/strong\u003e is needed without soldering.\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 with outer diameters of 6mm, 8mm, 9.52mm (3\/8\"), and 10mm. Confirm your tube's \u003cem\u003eouter diameter (OD)\u003c\/em\u003e — not inner diameter — before selecting a size. Not intended for plastic or corrugated tubing.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Brass Compression 4-Way Cross 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\u003eEqual 4-Port Cross Design\u003c\/strong\u003e — All four ports share the same bore diameter, ensuring balanced flow distribution across every branch — ideal for manifold and multi-zone copper tube systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔥\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNo-Solder Compression Connection\u003c\/strong\u003e — The ferrule-and-nut mechanism creates a leak-resistant seal by compressing onto the tube OD mechanically, eliminating the need for a torch, flux, or soldering skills.\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 brass body resists dezincification and handles the pressure and temperature ranges typical of residential plumbing, HVAC, and refrigeration lines.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMulti-Size Availability\u003c\/strong\u003e — Choose from 6mm, 8mm, 9.52mm (3\/8\" imperial), or 10mm to match metric and North American copper tube standards used in \u003cstrong\u003ecompression fitting HVAC copper pipe\u003c\/strong\u003e applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReassemblable Joint\u003c\/strong\u003e — Unlike soldered joints, compression fittings can generally be disassembled and re-tightened during installation adjustments, reducing costly rework on complex runs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e — Order 1, 3, or 5 pieces per size so you can match exactly what your project needs — from a single junction repair to stocking a full \u003cstrong\u003e4-way cross copper tube fitting\u003c\/strong\u003e kit.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Brass 4-Way Cross Compression 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\u003eEqual 4-Way Cross (compression)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Method\u003c\/th\u003e\n\u003ctd\u003eCompression (nut + ferrule, no solder)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Tube OD Sizes\u003c\/th\u003e\n\u003ctd\u003e6mm (≈1\/4\"), 8mm (≈5\/16\"), 9.52mm (3\/8\"), 10mm (≈3\/8\" metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Ports\u003c\/th\u003e\n\u003ctd\u003e4 (equal bore, cross configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Tube Material\u003c\/th\u003e\n\u003ctd\u003eCopper tube (hard and soft drawn)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eSee variant options — confirm with your system specs\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 application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass (unlacquered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs \/ 3 Pcs \/ 5 Pcs (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\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\u003eSize Note:\u003c\/strong\u003e Always measure your copper tube's \u003cem\u003eouter diameter\u003c\/em\u003e with calipers before ordering. Tube OD and nominal pipe size (NPS) are not the same — selecting by nominal size alone may result in a mismatch.\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 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. For example, a 6mm fitting is for 6mm OD copper tube, and 9.52mm (3\/8\") fits standard 3\/8-inch OD tubing commonly used in refrigeration and HVAC lines. Measure your tube OD with calipers before ordering — do not rely on nominal pipe size labels alone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is a brass compression fitting connection?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass compression fittings are generally rated for working pressures up to 200 PSI for water applications, though the exact rating depends on tube wall thickness and the specific system. They are typically suitable for residential plumbing, HVAC, and refrigeration lines operating at normal system pressures. Always verify the pressure rating against your system requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these fittings be used outdoors or in humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Brass offers good corrosion resistance and is generally suitable for outdoor and humid environments. For highly corrosive or marine environments, additional protection or stainless steel alternatives may be worth considering. In most standard outdoor plumbing and HVAC installations, brass compression fittings perform reliably.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these fittings compatible with metric and imperial copper tube standards?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe 6mm, 8mm, and 10mm sizes follow metric OD standards common in European and Asian plumbing systems. The 9.52mm size corresponds to the 3\/8-inch imperial OD standard widely used in North American HVAC and refrigeration. Always verify your tube's OD before purchasing to ensure a proper compression seal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need special tools to install these compression fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo soldering or special tools are required. A standard adjustable wrench or open-end wrench is typically all you need. Insert the tube, slide on the nut and ferrule, and tighten — the ferrule compresses onto the tube to create a leak-free seal. In most cases, hand-tightening plus 1–1.5 turns with a wrench is sufficient.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is a 4-way cross fitting used for?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA 4-way cross fitting connects four copper tubes meeting at a single junction point, allowing flow to split or merge in four directions simultaneously. It is commonly used in manifold systems, irrigation distribution lines, HVAC branch circuits, radiant floor heating loops, and custom copper tube fabrication projects where a single junction must serve multiple runs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many pieces do I need to order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eWe offer 1-piece, 3-piece, and 5-piece options. For a single repair or prototype, 1 Pcs is sufficient. For multi-zone systems or to keep spares on hand, the 3 Pcs or 5 Pcs bundles offer better value per fitting. Select your preferred quantity in the variant selector above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I reuse a compression fitting after disassembly?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIn many cases, compression fittings can be disassembled and reassembled during the same installation session. However, once a ferrule has been fully compressed onto a tube, it is generally recommended to replace the ferrule before reusing the fitting on a different tube section to ensure a reliable seal. Reusing on the exact same tube cut is typically acceptable.\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 \/ 1 Pcs","offer_id":52331567972626,"sku":"LJHDG-SPLDP-1243x1","price":22.02,"currency_code":"USD","in_stock":true},{"title":"8mm \/ 1 Pcs","offer_id":52331568005394,"sku":"LJHDG-SPLDP-1244x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"9.52mm \/ 1 Pcs","offer_id":52331568038162,"sku":"LJHDG-SPLDP-1245x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 1 Pcs","offer_id":52331568070930,"sku":"LJHDG-SPLDP-1246x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"6mm \/ 3 Pcs","offer_id":52331568103698,"sku":"LJHDG-SPLDP-1243x3","price":58.74,"currency_code":"USD","in_stock":true},{"title":"8mm \/ 3 Pcs","offer_id":52331568136466,"sku":"LJHDG-SPLDP-1244x3","price":68.61,"currency_code":"USD","in_stock":true},{"title":"9.52mm \/ 3 Pcs","offer_id":52331568169234,"sku":"LJHDG-SPLDP-1245x3","price":68.67,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 3 Pcs","offer_id":52331568202002,"sku":"LJHDG-SPLDP-1246x3","price":68.67,"currency_code":"USD","in_stock":true},{"title":"6mm \/ 5 Pcs","offer_id":52331568234770,"sku":"LJHDG-SPLDP-1243x5","price":95.05,"currency_code":"USD","in_stock":true},{"title":"8mm \/ 5 Pcs","offer_id":52331568267538,"sku":"LJHDG-SPLDP-1244x5","price":111.23,"currency_code":"USD","in_stock":true},{"title":"9.52mm \/ 5 Pcs","offer_id":52331568300306,"sku":"LJHDG-SPLDP-1245x5","price":111.37,"currency_code":"USD","in_stock":true},{"title":"10mm \/ 5 Pcs","offer_id":52331568333074,"sku":"LJHDG-SPLDP-1246x5","price":111.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-02_c84bf55f-f3e5-4c69-b382-f6a6f9cf471b.jpg?v=1781085148","url":"https:\/\/homediyer.com\/products\/brass-compression-fittings-4-way-cross-coupling-connector-copper-tube","provider":"HomeDIYer","version":"1.0","type":"link"}