{"product_id":"304-ss-bsp-cross-pipe-fittings-3-way-4-way","title":"304 Stainless Steel BSP Cross Pipe Fittings — 3-Way \u0026 4-Way, ½\" to 1\" Thread","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003c!-- ① OVERVIEW --\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBSP Cross Pipe Fittings in 304 Stainless Steel — Built for Reliable Multi-Branch Flow\u003c\/h2\u003e\n\u003cp\u003eLeaking joints and corroded fittings are a plumber's worst nightmare — especially when they're buried in a wall or running an irrigation line across a yard. Whether you're a DIY homeowner upgrading a water distribution system or a contractor building out a compressed air network, you need BSP cross pipe fittings that thread on cleanly, seal tight, and hold up over time without rusting out.\u003c\/p\u003e\n\u003cp\u003eEach fitting is machined from \u003cstrong\u003e304 stainless steel\u003c\/strong\u003e with standard \u003cstrong\u003eBSP (British Standard Pipe) female threads\u003c\/strong\u003e. Available in two configurations — \u003cstrong\u003e3-Way Cross (T-shape)\u003c\/strong\u003e and \u003cstrong\u003e4-Way Cross (+ shape)\u003c\/strong\u003e — and three nominal sizes: \u003cstrong\u003eDN15 (½\" BSP)\u003c\/strong\u003e, \u003cstrong\u003eDN20 (¾\" BSP)\u003c\/strong\u003e, and \u003cstrong\u003eDN25 (1\" BSP)\u003c\/strong\u003e. Sold individually (1 pcs per order); select your size and configuration from the variant options above.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include residential and commercial plumbing branch lines, garden and drip irrigation manifolds, compressed air distribution headers, and light industrial fluid systems — anywhere a reliable BSP threaded cross fitting for stainless steel pipe is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ② COMPATIBILITY BAR --\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eThread Compatibility:\u003c\/strong\u003e These fittings use \u003cstrong\u003eBSP (BSPP \/ G-thread) female threads\u003c\/strong\u003e and are compatible with standard BSP male-threaded pipes and fittings. \u003cem\u003eNot directly compatible with NPT threads\u003c\/em\u003e — use a BSP-to-NPT adapter if connecting to NPT systems.\u003c\/div\u003e\n\u003c!-- ③ KEY FEATURES --\u003e\n\u003ch2\u003e✅ Key Features of These BSP Cross Pipe 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\u003e304 Stainless Steel Construction\u003c\/strong\u003e — Resists rust, oxidation, and scale buildup in water and air lines, giving you a long service life without the maintenance headaches of carbon steel or brass fittings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔀\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003e3-Way \u0026amp; 4-Way Cross Configurations\u003c\/strong\u003e — The T-shaped 3-way cross splits flow into two branches; the +-shaped 4-way cross handles three simultaneous branch lines — choose the layout that matches your pipe network design.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003eThree BSP Sizes in One Listing\u003c\/strong\u003e — DN15 (½\" BSP), DN20 (¾\" BSP), and DN25 (1\" BSP) cover the most common residential and light commercial pipe sizes, so you can source the right stainless steel BSP threaded fitting without hunting across multiple listings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧵\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003ePrecision-Cut Female BSP Threads\u003c\/strong\u003e — Threads are machined to BSP (BSPP\/G) standard for consistent engagement and a leak-resistant seal when used with PTFE tape or thread sealant compound.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003eSuitable for Water, Air \u0026amp; Mild Fluids\u003c\/strong\u003e — Rated for typical plumbing and irrigation working pressures; compatible with water, compressed air, and non-aggressive media in both indoor and outdoor installations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003eCompact Body for Tight Spaces\u003c\/strong\u003e — The machined cross body keeps the overall footprint small, making it practical for manifold assemblies, wall-mounted distribution blocks, and confined mechanical rooms where space is limited.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n\u003ch2\u003e📐 Technical Specifications — BSP Cross Pipe Fittings (304 SS)\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e304 Stainless Steel (18-8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP — BSPP (G-thread, parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eFemale (internal thread, all ports)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Configurations\u003c\/th\u003e\n\u003ctd\u003e3-Way Cross (T) \/ 4-Way Cross (+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003eDN15 (½\" BSP) \/ DN20 (¾\" BSP) \/ DN25 (1\" BSP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size — DN15\u003c\/th\u003e\n\u003ctd\u003e½\" BSP — approx. 20.9 mm (≈0.82\") thread OD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size — DN20\u003c\/th\u003e\n\u003ctd\u003e¾\" BSP — approx. 26.4 mm (≈1.04\") thread OD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size — DN25\u003c\/th\u003e\n\u003ctd\u003e1\" BSP — approx. 33.2 mm (≈1.31\") thread OD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eBrushed \/ mill finish stainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Working Pressure\u003c\/th\u003e\n\u003ctd\u003eUp to 150 PSI (≈10 bar) at ambient temp — contact us to confirm for your application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitable Media\u003c\/th\u003e\n\u003ctd\u003eWater, compressed air, mild non-corrosive fluids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece (pcs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eSpec Confirmation:\u003c\/strong\u003e Exact body dimensions (hex width, overall length) vary by size and configuration. If you need precise measurements for a tight installation, contact us before ordering to confirm.\u003c\/div\u003e\n\u003c!-- ⑤ FAQ --\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 BSP size for my pipe fitting?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBSP sizes refer to the \u003cstrong\u003enominal bore\u003c\/strong\u003e of the pipe, not the outer diameter of the thread. As a quick reference: \u003cstrong\u003eDN15 = ½\" BSP\u003c\/strong\u003e (thread OD ≈ 20.9 mm \/ 0.82\"), \u003cstrong\u003eDN20 = ¾\" BSP\u003c\/strong\u003e (thread OD ≈ 26.4 mm \/ 1.04\"), \u003cstrong\u003eDN25 = 1\" BSP\u003c\/strong\u003e (thread OD ≈ 33.2 mm \/ 1.31\"). Measure the male thread OD on your existing pipe or fitting with calipers and match it to the closest BSP nominal size. When in doubt, contact us before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pressure can these 304 stainless steel cross fittings handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 SS BSP threaded fittings typically handle working pressures up to \u003cstrong\u003e150 PSI (≈10 bar)\u003c\/strong\u003e at ambient temperature for water and non-aggressive media. Actual ratings depend on pipe wall thickness, installation quality, and the fluid being conveyed. For high-pressure or elevated-temperature applications, contact us to confirm suitability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these fittings outdoors or in wet\/humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. \u003cstrong\u003e304 stainless steel\u003c\/strong\u003e offers good corrosion resistance in most outdoor, wet, and humid environments — including garden irrigation systems and exterior plumbing. For highly corrosive settings such as coastal salt-air exposure or chemical-laden environments, 316 stainless steel is generally recommended. In standard outdoor applications, 304 SS performs reliably over the long term.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre BSP threads compatible with NPT fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eBSP and NPT threads are not directly interchangeable.\u003c\/strong\u003e While some nominal sizes appear similar in diameter, the thread angle (55° BSP vs. 60° NPT) and pitch differ, which can cause leaks or cross-threading. If you need to connect to an NPT system, use a dedicated BSP-to-NPT adapter fitting. Contact us if you're unsure which standard your existing pipes use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a 3-way cross and a 4-way cross fitting?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA \u003cstrong\u003e3-way cross (T-shape)\u003c\/strong\u003e has three ports — typically one inlet and two outlets — allowing flow to split in two directions. It's the standard tee fitting used in most branch-line plumbing. A \u003cstrong\u003e4-way cross (+ shape)\u003c\/strong\u003e has four ports arranged in a plus sign, allowing flow to split in three directions simultaneously. Choose the 4-way cross when you need to feed three branch lines from a single junction point.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need PTFE tape or thread sealant when installing these fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — \u003cstrong\u003ePTFE thread seal tape (plumber's tape)\u003c\/strong\u003e or a compatible pipe thread sealant compound is recommended for all BSP threaded connections to achieve a leak-free seal. Apply 2–3 wraps of PTFE tape clockwise (in the direction of the thread) on the male threads before assembly. Do not over-tighten; hand-tight plus 1–2 turns with a wrench is generally sufficient for most BSP fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat fluids are these fittings suitable for?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese 304 SS cross fittings are generally suitable for \u003cstrong\u003ewater, compressed air, mild chemicals, and non-corrosive gases\u003c\/strong\u003e. Common applications include residential plumbing, garden and drip irrigation manifolds, compressed air distribution lines, and light industrial fluid systems. For aggressive chemicals, high-purity water, or steam applications, verify media compatibility before installation or contact us for guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- ⑥ CTA BAR --\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003esize and configuration\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"3-Way Cross 1\u00262\" BSP (DN15) \/ 1 pcs","offer_id":52336636199186,"sku":"PENGWEWY000016x1","price":8.83,"currency_code":"USD","in_stock":true},{"title":"3-Way Cross 3\u00264\" BSP (DN20) \/ 1 pcs","offer_id":52336636231954,"sku":"PENGWEWY000017x1","price":12.04,"currency_code":"USD","in_stock":true},{"title":"3-Way Cross 1\" BSP (DN25) \/ 1 pcs","offer_id":52336636264722,"sku":"PENGWEWY000018x1","price":18.16,"currency_code":"USD","in_stock":true},{"title":"4-Way Cross 1\u00262\" BSP (DN15) \/ 1 pcs","offer_id":52336636297490,"sku":"PENG026286x1","price":10.46,"currency_code":"USD","in_stock":true},{"title":"4-Way Cross 3\u00264\" BSP (DN20) \/ 1 pcs","offer_id":52336636330258,"sku":"PENG026287x1","price":16.44,"currency_code":"USD","in_stock":true},{"title":"4-Way Cross 1\" BSP (DN25) \/ 1 pcs","offer_id":52336636363026,"sku":"PENG026288x1","price":21.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture5of17_acdf1114-cbba-4454-8ab8-20d4abaad6e5.jpg?v=1781075750","url":"https:\/\/homediyer.com\/de\/products\/304-ss-bsp-cross-pipe-fittings-3-way-4-way","provider":"HomeDIYer","version":"1.0","type":"link"}