{"product_id":"brass-bsp-female-thread-reducing-pipe-adapter-connector","title":"Brass BSP Female Thread Reducing Pipe Adapter Connector — 1-1\/4\" to 2\"","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003c!-- ① OVERVIEW --\u003e\n\u003ch2\u003eBrass BSP Female Thread Reducing Pipe Adapter — Connect Different Pipe Sizes Without Leaks\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eWhen your plumbing, HVAC, or fluid system requires joining two pipes of different diameters, a mismatched connection can mean costly leaks, pressure loss, or system downtime. Whether you're a professional plumber, HVAC technician, or a hands-on homeowner tackling a pipe upgrade, having the right brass BSP female thread reducing adapter on hand makes the job clean and reliable.\u003c\/p\u003e\n\u003cp\u003eEach piece is a solid brass female-to-female BSP reducing adapter connector, machined to accept two different BSP (British Standard Pipe \/ G-thread) parallel thread sizes. Available in multiple size combinations ranging from 1-1\/4\" × 1\/2\" up to 2\" × 2\" — covering the most common reducing configurations in residential and light commercial piping. The larger port is the inlet and the smaller port is the outlet, allowing you to step down pipe diameter in a single fitting.\u003c\/p\u003e\n\u003cp\u003eTypical applications include reducing pipe runs in water supply lines, connecting differently sized valves or manifolds in HVAC systems, and adapting BSP-threaded pneumatic or hydraulic components. This brass BSP reducing connector is also widely used in irrigation systems, compressed air lines, and industrial fluid transfer setups where a reliable female thread pipe joiner is needed.\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 Standard:\u003c\/strong\u003e BSP (British Standard Pipe) Parallel Thread — also known as G-thread or BSPP. \u003cstrong\u003eNot directly compatible with NPT threads.\u003c\/strong\u003e Verify your existing fittings use BSP before ordering.\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 Variant dimensions (e.g., \"1-1\/2\\\" × 1\\\") indicate inlet thread size × outlet thread size. If you are unsure of your pipe's BSP size, measure the thread OD or use a thread gauge. Contact us to confirm before purchase.\u003c\/div\u003e\n\u003c!-- ③ KEY FEATURES --\u003e\n\u003ch2\u003e✅ Key Features of These Brass BSP Female Thread Reducing Adapters\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — Machined from solid brass for durability, corrosion resistance, and reliable performance in water, air, and gas lines — a dependable choice for brass pipe fitting 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\u003c\/strong\u003e — Available in 12 size combinations from 1-1\/4\" × 1\/2\" to 2\" × 2\", covering the most common BSP reducing adapter configurations for residential and commercial plumbing.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFemale-to-Female Thread Design\u003c\/strong\u003e — Both ports feature internal (female) BSP parallel threads, allowing direct connection to male-threaded pipes, valves, or fittings without additional couplings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLeak-Resistant Thread Profile\u003c\/strong\u003e — Precision-machined BSP threads provide consistent thread engagement. Use with PTFE tape for a secure, leak-free seal in pressurized water and air systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eVersatile Application Fit\u003c\/strong\u003e — Suitable for plumbing, HVAC, pneumatic, hydraulic, and irrigation systems where a female thread pipe joiner or reducing connector is required to step down pipe diameter.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStraightforward Installation\u003c\/strong\u003e — No special tools required beyond a standard pipe wrench. Compatible with standard BSP fittings and valves, making replacement or system expansion fast and straightforward.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n\u003ch2\u003e📐 Technical Specifications — Brass BSP Reducing Adapter Connector\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\u003eSolid Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) Parallel — BSPP \/ G-thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Type\u003c\/th\u003e\n\u003ctd\u003eFemale × Female (both ports internal thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting Function\u003c\/th\u003e\n\u003ctd\u003eReducing Adapter \/ Joiner Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Size Combinations (Inlet × Outlet)\u003c\/th\u003e\n\u003ctd\u003e1-1\/4\" × 1\/4\", 1-1\/2\" × 1-1\/2\", 2\" × 2\", 1-1\/4\" × 1\/2\", 1-1\/4\" × 3\/4\", 1-1\/4\" × 1\", 1-1\/2\" × 1\/2\", 1-1\/2\" × 3\/4\", 1-1\/2\" × 1\", 2\" × 1-1\/4\", 1-1\/2\" × 1-1\/4\", 2\" × 1-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eSee variant options — typically rated for standard plumbing pressures; contact us to confirm for high-pressure applications\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\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Media\u003c\/th\u003e\n\u003ctd\u003eWater, air, natural gas, propane, hydraulic fluid (verify for other media)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNPT Compatible\u003c\/th\u003e\n\u003ctd\u003eNo — BSP and NPT threads are not interchangeable\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\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 size reducing adapter for my pipe?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter of your existing pipe threads and match them to the BSP standard size. The first dimension in each variant (e.g., 1-1\/2\" × 1\") refers to the larger inlet thread; the second is the smaller outlet. Generally, 1-1\/4\" BSP has an OD of approximately 41.9mm (≈1.65\"), 1-1\/2\" BSP is approximately 47.8mm (≈1.88\"), and 2\" BSP is approximately 59.6mm (≈2.35\"). When in doubt, use a thread gauge or contact us to confirm before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard does this adapter use — is it compatible with NPT?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis adapter uses BSP (British Standard Pipe) parallel threads, also known as G-thread or BSPP. BSP is widely used in plumbing, HVAC, pneumatic, and hydraulic systems across the US, UK, Europe, and Asia. It is \u003cstrong\u003enot directly compatible with NPT (National Pipe Taper)\u003c\/strong\u003e threads — the thread angle and pitch differ. If your existing fittings are 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\u003eCan this brass adapter be used outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass generally offers good corrosion resistance for indoor plumbing and moderate outdoor use. For prolonged outdoor or marine exposure, we recommend applying PTFE thread tape and, if needed, a protective coating. In highly corrosive environments (e.g., saltwater or chemical exposure), stainless steel fittings may be more suitable. Contact us if you need guidance for your specific environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pressure rating of this reducing adapter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass BSP fittings of this type typically handle working pressures in the range of 150–600 PSI depending on size, wall thickness, and application. For exact pressure ratings in your specific system, please contact us to confirm before installation in high-pressure lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs PTFE tape required for installation?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, applying PTFE (Teflon) thread tape or pipe thread sealant is strongly recommended for all BSP parallel thread connections to ensure a leak-free seal. Wrap the male threads 2–3 times in the direction of the thread before assembly. Do not apply sealant to the female threads on this adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat tools do I need to install this fitting?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA pipe wrench or adjustable wrench is typically sufficient. Avoid over-tightening, as brass can crack under excessive torque. Hand-tighten first, then use a wrench for an additional 1–2 turns. Do not use power tools for final tightening on brass fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat fluids or media is this adapter compatible with?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass fittings are generally compatible with water, air, natural gas, propane, and many hydraulic fluids. They are not recommended for use with ammonia, acetylene, or highly acidic\/alkaline fluids. Always verify compatibility with your specific media before installation in critical systems.\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\u003etype (inlet × outlet size)\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"11\u00264\" x 11\u00264\" \/ 1Pcs","offer_id":52331436540178,"sku":"FXL1599-0","price":9.51,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 11\u00262\" \/ 1Pcs","offer_id":52331436572946,"sku":"FXL1599-1","price":12.5,"currency_code":"USD","in_stock":true},{"title":"2\" x 2\" \/ 1Pcs","offer_id":52331436605714,"sku":"FXL1599-2","price":15.49,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 1\u00262\" \/ 1Pcs","offer_id":52331436638482,"sku":"FXL1599-3","price":9.91,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 3\u00264\" \/ 1Pcs","offer_id":52331436671250,"sku":"FXL1599-4","price":10.27,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 1\" \/ 1Pcs","offer_id":52331436704018,"sku":"FXL1599-5","price":10.27,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 1\u00262\" \/ 1Pcs","offer_id":52331436736786,"sku":"FXL1599-6","price":12.77,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 3\u00264\" \/ 1Pcs","offer_id":52331436769554,"sku":"FXL1599-7","price":12.44,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 1\" \/ 1Pcs","offer_id":52331436802322,"sku":"FXL1599-8","price":12.77,"currency_code":"USD","in_stock":true},{"title":"2\" x 11\u00264\" \/ 1Pcs","offer_id":52331436835090,"sku":"FXL1599-9","price":18.7,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 11\u00264\" \/ 1Pcs","offer_id":52331436867858,"sku":"FXL1599-10","price":12.77,"currency_code":"USD","in_stock":true},{"title":"2\" x 11\u00262\" \/ 1Pcs","offer_id":52331436900626,"sku":"FXL1599-11","price":18.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of17_24de7398-2e09-4d77-a626-6175d5d1625b.jpg?v=1780993146","url":"https:\/\/homediyer.com\/de\/products\/brass-bsp-female-thread-reducing-pipe-adapter-connector","provider":"HomeDIYer","version":"1.0","type":"link"}