{"product_id":"bsp-stainless-steel-reducing-bush-female-thread","title":"BSP Stainless Steel Reducing Bush — Female Thread Pipe Fitting","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003c!-- ① OVERVIEW --\u003e\n\u003ch2\u003eBSP Stainless Steel Reducing Bush — Reliable Female Thread Pipe Fitting for Any Reduction Job\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eWhen you need to connect two pipes of different diameters without leaks or corrosion headaches, a mismatched fitting can cost you hours of rework. Whether you are a plumber adapting an existing water line, a DIYer finishing a home workshop air system, or a contractor running a gas distribution loop, having the right BSP stainless steel reducing bush on hand makes the job straightforward and code-compliant.\u003c\/p\u003e\n\u003cp\u003eEach piece is a one-part female-threaded reducing bush machined from stainless steel, with a larger female BSP port on one end and a smaller male BSP outlet on the other. Available in 20 size combinations ranging from 3\/8\"–1\/4\" (≈9.5mm–6.4mm) up to 2\"–1-1\/2\" (≈50.8mm–38.1mm), covering the most common pipe reduction steps used in residential and light commercial plumbing. Exact wall thickness and hex flat dimensions vary by size — see variant options for the combination you need.\u003c\/p\u003e\n\u003cp\u003eTypical applications include reducing water supply branch lines in residential plumbing, stepping down compressed-air distribution headers in workshops and garages, adapting hydraulic or pneumatic instrument ports, and connecting gas supply lines where a size transition is required between the meter and appliance.\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) — compatible with BSPP and BSPT fittings. \u003cstrong\u003eNot directly compatible with NPT threads\u003c\/strong\u003e without a conversion adapter. Confirm your existing fitting standard before ordering.\u003c\/div\u003e\n\u003c!-- ③ KEY FEATURES --\u003e\n\u003ch2\u003e✅ Key Features of These BSP Stainless Steel Reducing Bushes\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFemale-to-Male Reducing Design\u003c\/strong\u003e — The larger end accepts a female BSP connection while the smaller end provides a male BSP outlet, allowing a clean in-line pipe size reduction without additional adapters.\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 — Machined from stainless steel for resistance to rust, scale, and oxidation — a practical choice for water, air, and gas lines in both indoor and outdoor environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e20 Size Combinations Available\u003c\/strong\u003e — Covers reductions from 3\/8\" down to 1\/4\" all the way up to 2\" down to 1-1\/2\", so you can match the exact step-down your system requires without cutting or welding.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHex Body for Wrench Engagement\u003c\/strong\u003e — The hexagonal body profile allows a standard pipe wrench or adjustable wrench to seat firmly, making installation and removal straightforward without slipping or rounding.\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, and Gas Systems\u003c\/strong\u003e — Stainless steel BSP reducing bushes are widely used in plumbing, compressed-air distribution, and gas supply lines where a reliable, leak-resistant threaded connection is needed.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eBroad Compatibility with BSP Plumbing Systems\u003c\/strong\u003e — BSP is one of the most widely adopted thread standards globally, making these bushes compatible with the majority of fittings, valves, and manifolds found in residential and light commercial installations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n\u003ch2\u003e📐 Technical Specifications — BSP Female Thread Reducing Bush\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e Size format is \u003cstrong\u003eLarge Port × Small Port\u003c\/strong\u003e (e.g., 3\/4\"–1\/4\" reduces a 3\/4\" line to a 1\/4\" outlet). Confirm both thread sizes before ordering.\u003c\/div\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\u003eReducing Bush (Pipe Fitting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Form\u003c\/th\u003e\n\u003ctd\u003eFemale (large end) × Male (small end)\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\u003eAvailable Size Range\u003c\/th\u003e\n\u003ctd\u003e3\/8\"–1\/4\" up to 2\"–1-1\/2\" (20 combinations — see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Shape\u003c\/th\u003e\n\u003ctd\u003eHexagonal (wrench-flat exterior)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm for your specific size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Temperature\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Sealant\u003c\/th\u003e\n\u003ctd\u003ePTFE tape or thread compound (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece per variant\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\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 reducing bush size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe size format shown is \u003cstrong\u003eLarge Port × Small Port\u003c\/strong\u003e. For example, \u003cem\u003e3\/4\"–1\/4\"\u003c\/em\u003e means the bush reduces a 3\/4\" BSP female port down to a 1\/4\" BSP male outlet. Measure your existing pipe or fitting thread diameter before ordering — a thread gauge or caliper typically helps confirm the size. If you are between sizes, always size up and use an additional reducer rather than forcing a mismatched thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these reducing bushes use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese fittings use \u003cstrong\u003eBSP (British Standard Pipe)\u003c\/strong\u003e threads, which are generally compatible with most plumbing systems that follow the BSP\/BSPP standard. BSP threads are widely used in the UK, Australia, Asia, and many parts of Europe. They are \u003cstrong\u003enot directly compatible with NPT (National Pipe Taper)\u003c\/strong\u003e threads — if your existing system uses NPT, you will need a BSP-to-NPT conversion adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these reducing bushes 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 moisture, making these bushes generally suitable for outdoor plumbing, marine-adjacent environments, and applications exposed to humidity or mild chemicals. For highly aggressive chemical media (strong acids, chlorinated solutions), confirm material compatibility with your specific application before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pressure rating can these fittings handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStainless steel BSP reducing bushes of this type typically handle working pressures ranging from approximately 150 PSI to 3,000 PSI depending on size — larger sizes generally carry lower pressure ratings due to greater wall stress. Please \u003cstrong\u003econtact us to confirm the rated pressure\u003c\/strong\u003e for your specific size before use in high-pressure hydraulic or pneumatic systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these 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, local codes and regulations vary by jurisdiction. Always verify compliance with your local plumbing or gas codes, use a thread sealant rated for gas service (such as yellow PTFE tape), and have the installation inspected by a licensed professional where required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need thread sealant when installing these bushes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — thread sealant is recommended for a leak-free connection. BSP parallel threads (BSPP) rely on a face seal or sealant to prevent leaks, while BSP tapered threads (BSPT) use thread interference but still benefit from PTFE tape or thread compound. Apply sealant to the \u003cstrong\u003emale thread\u003c\/strong\u003e before assembly, wrapping PTFE tape clockwise (when viewed from the thread end) for 2–3 turns.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat tools do I need to install a reducing bush?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA pipe wrench or adjustable wrench is typically sufficient for most sizes. For larger sizes (1\" and above), a strap wrench helps avoid surface marring on the stainless finish. Always use \u003cstrong\u003etwo wrenches\u003c\/strong\u003e — one to hold the mating fitting body and one to tighten the bush — to avoid transmitting torque stress to the connected pipe or valve.\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 size above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"3\u00268\"-1\u00264\"","offer_id":52336641048850,"sku":"XFGLBZSJ026670x1","price":8.47,"currency_code":"USD","in_stock":true},{"title":"1\u00262\"-1\u00264\"","offer_id":52336641081618,"sku":"XFGLBZSJ026671x1","price":10.17,"currency_code":"USD","in_stock":true},{"title":"1\u00262\"-3\u00268\"","offer_id":52336641114386,"sku":"XFGLBZSJ026672x1","price":10.17,"currency_code":"USD","in_stock":true},{"title":"3\u00264\"-1\u00264\"","offer_id":52336641147154,"sku":"XFGLBZSJ026673x1","price":11.12,"currency_code":"USD","in_stock":true},{"title":"3\u00264\"-3\u00268\"","offer_id":52336641179922,"sku":"XFGLBZSJ026674x1","price":13.1,"currency_code":"USD","in_stock":true},{"title":"3\u00264\"-1\u00262\"","offer_id":52336641212690,"sku":"XFGLBZSJ026675x1","price":12.76,"currency_code":"USD","in_stock":true},{"title":"1\"-3\u00268\"","offer_id":52336641245458,"sku":"XFGLBZSJ026676x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"1\"-1\u00262\"","offer_id":52336641278226,"sku":"XFGLBZSJ026677x1","price":14.12,"currency_code":"USD","in_stock":true},{"title":"1\"-3\u00264\"","offer_id":52336641310994,"sku":"XFGLBZSJ026678x1","price":15.48,"currency_code":"USD","in_stock":true},{"title":"1-1\u00264\"-1\u00262\"","offer_id":52336641343762,"sku":"XFGLBZSJ026679x1","price":19.99,"currency_code":"USD","in_stock":true},{"title":"1-1\u00264\"-3\u00264\"","offer_id":52336641376530,"sku":"XFGLBZSJ026680x1","price":21.73,"currency_code":"USD","in_stock":true},{"title":"1-1\u00264\"-4\"-1\"","offer_id":52336641409298,"sku":"XFGLBZSJ026681x1","price":21.73,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\"-1\u00262\"","offer_id":52336641442066,"sku":"XFGLBZSJ026682x1","price":24.34,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\"-3\u00264\"","offer_id":52336641474834,"sku":"XFGLBZSJ026683x1","price":24.89,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\"-2\"-1\"","offer_id":52336641507602,"sku":"XFGLBZSJ026684x1","price":25.16,"currency_code":"USD","in_stock":true},{"title":"1-1\u00262\"-1\u00264\"","offer_id":52336641540370,"sku":"XFGLBZSJ026685x1","price":25.54,"currency_code":"USD","in_stock":true},{"title":"2\"-1\u00262\"","offer_id":52336641573138,"sku":"XFGLBZSJ026686x1","price":32.5,"currency_code":"USD","in_stock":true},{"title":"2\"-3\u00264\"","offer_id":52336641605906,"sku":"XFGLBZSJ026687x1","price":35.06,"currency_code":"USD","in_stock":true},{"title":"2\"-2\"-1\"","offer_id":52336641638674,"sku":"XFGLBZSJ026688x1","price":34.52,"currency_code":"USD","in_stock":true},{"title":"2\"-1-1\u00262\"","offer_id":52336641671442,"sku":"XFGLBZSJ026689x1","price":36.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-02_c4c63812-4218-4bfa-a963-8ab40deab864.jpg?v=1781076082","url":"https:\/\/homediyer.com\/de\/products\/bsp-stainless-steel-reducing-bush-female-thread","provider":"HomeDIYer","version":"1.0","type":"link"}