{"product_id":"stainless-steel-threaded-pipe-reducer-nipple-bsp-male-fitting","title":"Stainless Steel Threaded Pipe Reducer Nipple — BSP Male to Male Fitting","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eStainless Steel Pipe Reducer Nipple — Connect Different BSP Pipe Sizes Without Extra Fittings\u003c\/h2\u003e\n\u003cp\u003eWhen a plumbing run changes diameter mid-line, most installers reach for a coupling plus a separate reducer — adding bulk, potential leak points, and extra labor. Whether you're a plumber retrofitting an older system, a DIYer building a compressed air manifold, or a facilities tech maintaining industrial pipework, a \u003cstrong\u003estainless steel threaded pipe reducer nipple\u003c\/strong\u003e solves the problem in one compact piece.\u003c\/p\u003e\n\u003cp\u003eEach listing is for \u003cstrong\u003e1 piece\u003c\/strong\u003e of a male-to-male BSP reducer nipple machined from stainless steel. The size format is \u003cem\u003eInlet × Outlet\u003c\/em\u003e — for example, 2\" × 1\" (≈50mm × 25mm) means a 2-inch male BSP inlet reducing to a 1-inch male BSP outlet. Available sizes range from 1-1\/2\" × 1\/2\" (≈38mm × 13mm) up to 4\" × 3\" (≈100mm × 75mm), covering the most common residential and light-industrial reduction steps.\u003c\/p\u003e\n\u003cp\u003eTypical applications include \u003cstrong\u003eresidential water supply line transitions\u003c\/strong\u003e, compressed air distribution headers, irrigation manifold assemblies, and light industrial fluid transfer systems where a BSP male-to-male reducing connection is required in a single fitting.\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 BSP (British Standard Pipe) male threads on both ends. Fits standard BSP female sockets, tees, elbows, and valves. Not compatible with NPT (National Pipe Thread) fittings without an adapter. Verify your existing system uses BSP threading before ordering.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Stainless Steel BSP Reducer Nipples\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMale-to-Male BSP Threads Both Ends\u003c\/strong\u003e — Dual external threads let you bridge two female-threaded fittings of different sizes without a separate coupling, keeping your pipe run compact and leak points minimal.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStainless Steel Construction\u003c\/strong\u003e — Resists rust, oxidation, and mild chemical exposure far better than carbon steel or brass in wet or outdoor environments, making these suitable for long-term installations where corrosion is a concern.\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 — 1-1\/2\" to 4\" Inlet\u003c\/strong\u003e — With 23 size combinations available, from small 1-1\/2\" × 1\/2\" reducer nipples for branch lines up to 4\" × 3\" for main trunk reductions, one SKU family covers most residential and light-commercial BSP pipe reducer nipple needs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMachined Thread Engagement\u003c\/strong\u003e — Precisely cut BSP threads provide consistent engagement depth, reducing the risk of cross-threading during installation and supporting a reliable 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; Gas Systems\u003c\/strong\u003e — Stainless steel BSP fittings are widely used across potable water, compressed air, and gas distribution applications. Always verify local code compliance for gas line use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSingle-Piece Reducer Design\u003c\/strong\u003e — Eliminates the need for a full-size nipple plus a reducer socket, cutting assembly time and reducing the number of threaded joints in your system — each joint is a potential leak point.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — BSP Threaded Pipe Reducer Nipple\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eThreaded Pipe Reducer Nipple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) — Male on both ends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eMill \/ natural stainless (no coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range (Inlet × Outlet)\u003c\/th\u003e\n\u003ctd\u003e1-1\/2\" × 1\/2\" up to 4\" × 3\" — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApproximate Metric Equivalents\u003c\/th\u003e\n\u003ctd\u003e~38mm × 13mm up to ~100mm × 75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eBSPT (tapered) — confirm with variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eTypically up to 150 PSI (~10 bar) — contact us to confirm for your application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eSee variant options or contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece (1Pcs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Systems\u003c\/th\u003e\n\u003ctd\u003eWater supply, compressed air, gas (verify local codes), irrigation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot Compatible With\u003c\/th\u003e\n\u003ctd\u003eNPT threads (requires adapter)\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 Confirm your existing fittings use BSP (not NPT) threads. BSP and NPT threads are not interchangeable. If unsure, measure your thread pitch or contact us — we're happy to help you identify the correct standard.\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 reducer nipple size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe size format is \u003cstrong\u003eInlet × Outlet\u003c\/strong\u003e (e.g., 2\" × 1\" means a 2-inch male inlet reducing to a 1-inch male outlet). Measure your existing pipe threads or check your fitting spec sheet. BSP thread sizes are typically measured by nominal bore, not the actual outer diameter of the thread. When in doubt, go one size up on the inlet side to maintain flow capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pressure rating do these reducer nipples support?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStainless steel BSP threaded nipples generally support working pressures up to \u003cstrong\u003e150 PSI (approximately 10 bar)\u003c\/strong\u003e in standard plumbing applications. Actual ratings depend on pipe schedule, temperature, and the media being conveyed. For high-pressure or steam applications, contact us to confirm suitability before ordering.\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\u003eYes. Stainless steel construction provides strong resistance to rust, oxidation, and many corrosive media. These fittings are generally suitable for outdoor plumbing, marine-adjacent environments, and chemical-adjacent applications. For highly aggressive chemicals or saltwater immersion, verify compatibility with your specific media before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these fittings use — BSP or NPT?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese reducer nipples use \u003cstrong\u003eBSP (British Standard Pipe) male threads\u003c\/strong\u003e on both ends. BSP is widely used in plumbing, hydraulics, and pneumatics across the US, UK, Europe, and Asia. BSP and NPT (National Pipe Thread) threads are \u003cem\u003enot\u003c\/em\u003e interchangeable — mixing them will result in cross-threading or leaks. If your existing system uses NPT, you will need a BSP-to-NPT adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need Teflon tape or thread sealant?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. For a leak-free connection, apply \u003cstrong\u003ePTFE (Teflon) tape\u003c\/strong\u003e or a suitable pipe thread sealant compound to the male threads before assembly. Wrap the tape in the direction of the thread (clockwise when facing the end of the fitting) for 2–3 layers. This is standard practice for BSP threaded fittings in water, gas, and compressed air systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these be used for gas lines?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStainless steel BSP fittings are commonly used in gas distribution systems. However, gas line installations must comply with local building codes and regulations. Always have gas line work inspected by a licensed professional. Contact us to confirm the specific size variant is rated for your gas application before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a reducer nipple and a standard nipple?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA \u003cstrong\u003estandard nipple\u003c\/strong\u003e has the same thread size on both ends. A \u003cstrong\u003ereducer nipple\u003c\/strong\u003e (also called a reducing nipple) has two different thread sizes — a larger inlet and a smaller outlet — allowing you to connect pipes of different diameters in a single compact fitting, without needing a separate reducer coupling and full-size nipple.\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":"1-1\u00262\" × 1-1\u00262\" \/ 1Pcs","offer_id":52336728932626,"sku":"GYLJJHYJJ01705x1","price":38.16,"currency_code":"USD","in_stock":true},{"title":"2\" × 2\" \/ 1Pcs","offer_id":52336728965394,"sku":"GYLJJHYJJ01703x1","price":57.99,"currency_code":"USD","in_stock":true},{"title":"2-1\u00262\" × 2-1\u00262\" \/ 1Pcs","offer_id":52336728998162,"sku":"GYLJJHYJJ01708x1","price":91.15,"currency_code":"USD","in_stock":true},{"title":"3\" × 3\" \/ 1Pcs","offer_id":52336729030930,"sku":"GYLJJHYJJ01706x1","price":132.25,"currency_code":"USD","in_stock":true},{"title":"4\" × 4\" \/ 1Pcs","offer_id":52336729063698,"sku":"GYLJJHYJJ01697x1","price":219.98,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\" × 1\u00262\" \/ 1Pcs","offer_id":52336729096466,"sku":"GYLJJHYJJ01709x1","price":35.14,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\" × 3\u00264\" \/ 1Pcs","offer_id":52336729129234,"sku":"GYLJJHYJJ01698x1","price":35.9,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\" × 1\" \/ 1Pcs","offer_id":52336729162002,"sku":"GYLJJHYJJ01704x1","price":38.57,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\" × 1-1\u00264\" \/ 1Pcs","offer_id":52336729194770,"sku":"GYLJJHYJJ01700x1","price":39.09,"currency_code":"USD","in_stock":true},{"title":"2\" × 1\u00262\" \/ 1Pcs","offer_id":52336729227538,"sku":"GYLJJHYJJ01699x1","price":53.01,"currency_code":"USD","in_stock":true},{"title":"2\" × 3\u00264\" \/ 1Pcs","offer_id":52336729260306,"sku":"GYLJJHYJJ01701x1","price":53.34,"currency_code":"USD","in_stock":true},{"title":"2\" × 1\" \/ 1Pcs","offer_id":52336729293074,"sku":"GYLJJHYJJ01695x1","price":52.16,"currency_code":"USD","in_stock":true},{"title":"2\" × 1-1\u00264\" \/ 1Pcs","offer_id":52336729325842,"sku":"GYLJJHYJJ01707x1","price":55.31,"currency_code":"USD","in_stock":true},{"title":"2\" × 1-1\u00262\" \/ 1Pcs","offer_id":52336729358610,"sku":"GYLJJHYJJ01696x1","price":55.71,"currency_code":"USD","in_stock":true},{"title":"2\" × 4\" \/ 1Pcs","offer_id":52336729391378,"sku":"GYLJJHYJJ01712x1","price":203.08,"currency_code":"USD","in_stock":true},{"title":"2-1\u00262\" × 1-1\u00264\" \/ 1Pcs","offer_id":52336729424146,"sku":"GYLJJHYJJ01713x1","price":89.57,"currency_code":"USD","in_stock":true},{"title":"2-1\u00262\" × 1-1\u00262\" \/ 1Pcs","offer_id":52336729456914,"sku":"GYLJJHYJJ01693x1","price":92.29,"currency_code":"USD","in_stock":true},{"title":"2-1\u00262\" × 2\" \/ 1Pcs","offer_id":52336729489682,"sku":"GYLJJHYJJ01691x1","price":94.41,"currency_code":"USD","in_stock":true},{"title":"2-1\u00262\" × 4\" \/ 1Pcs","offer_id":52336729522450,"sku":"GYLJJHYJJ01692x1","price":205.85,"currency_code":"USD","in_stock":true},{"title":"3\" × 1-1\u00262\" \/ 1Pcs","offer_id":52336729555218,"sku":"GYLJJHYJJ01711x1","price":122.71,"currency_code":"USD","in_stock":true},{"title":"3\" × 2\" \/ 1Pcs","offer_id":52336729587986,"sku":"GYLJJHYJJ01702x1","price":128.76,"currency_code":"USD","in_stock":true},{"title":"3\" × 2-1\u00262\" \/ 1Pcs","offer_id":52336729620754,"sku":"GYLJJHYJJ01710x1","price":124.98,"currency_code":"USD","in_stock":true},{"title":"4\" × 3\" \/ 1Pcs","offer_id":52336729653522,"sku":"GYLJJHYJJ01694x1","price":225.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_a35ae70d-2bd7-410e-b70d-68c0c5db250d.jpg?v=1781155986","url":"https:\/\/homediyer.com\/products\/stainless-steel-threaded-pipe-reducer-nipple-bsp-male-fitting","provider":"HomeDIYer","version":"1.0","type":"link"}