{"product_id":"bsp-reducing-bush-stainless-steel-male-female-pipe-adapter","title":"BSP Reducing Bush Stainless Steel Male x Female Pipe Adapter — 13 Sizes","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right size BSP reducing bush for my pipe?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The size format is Male OD × Female ID — for example, 1\\\" × 1\/2\\\" means the male (outer) thread is 1 inch BSP and the female (inner) thread is 1\/2 inch BSP. Measure your existing pipe threads or check your fitting spec sheet. BSP sizes refer to nominal bore, not actual thread diameter. When in doubt, go one size up on the male end to ensure a secure fit.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What thread standard do these reducing bushes use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These fittings use BSP (British Standard Pipe) threads, which are widely used in plumbing, hydraulics, and pneumatic systems across the US, UK, Australia, and most of Asia. BSP is generally not compatible with NPT (National Pipe Taper) threads without an adapter, so confirm your system uses BSP before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these stainless steel reducing bushes be used outdoors or in wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Stainless steel is inherently corrosion-resistant and generally suitable for outdoor, marine, and high-humidity environments. For prolonged saltwater or chemical exposure, we recommend confirming the grade with us before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much pressure can these BSP reducing bushes handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Stainless steel BSP reducing bushes typically handle working pressures in the range of 150–3000 PSI depending on size and wall thickness. Smaller sizes generally support higher pressure ratings. Contact us to confirm the pressure rating for your specific size before use in high-pressure systems.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need thread sealant or PTFE tape with these fittings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, PTFE (Teflon) tape or a compatible thread sealant compound is recommended for all BSP parallel thread connections to ensure a leak-free seal. Apply 2–3 wraps of PTFE tape clockwise on the male threads before assembly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these reducing bushes suitable for gas lines?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Stainless steel BSP fittings are generally used in water, air, oil, and hydraulic systems. For gas line applications, local codes and regulations vary — please consult a licensed plumber or gas fitter and verify compliance with your local standards before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 1Pcs and 2Pcs options?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 1Pcs option includes a single reducing bush adapter. The 2Pcs option includes two identical adapters of the same size — useful for projects requiring matched pairs or as a spare. Both options ship the same size you select.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eBSP Reducing Bush Stainless Steel Adapter — Reliable Male × Female Thread Reduction\u003c\/h2\u003e\n    \u003cp\u003eWhen your pipe system calls for stepping down from a larger male thread to a smaller female thread, a mismatched or low-grade fitting can mean leaks, corrosion, and costly rework. Plumbers, HVAC technicians, and serious DIYers who work with BSP-threaded systems need a reducing bush that threads in cleanly, seals reliably, and holds up over time — without rust or galling after the first season.\u003c\/p\u003e\n    \u003cp\u003eEach adapter is a BSP male × female reducing bush machined from stainless steel, available in 13 size combinations ranging from 3\/4\" × 1\/2\" (19mm × 13mm) up to 2\" × 1-1\/2\" (51mm × 38mm). The male (outer) thread connects to your larger-bore fitting or pipe, while the female (inner) thread accepts the smaller-bore continuation. Available individually (1Pcs) or as a matched pair (2Pcs) for projects that need a spare or symmetrical installation.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include reducing down pipe runs in residential plumbing, connecting mismatched BSP ports on hydraulic manifolds, adapting air compressor fittings to smaller pneumatic tools, and retrofitting irrigation systems where line sizes change — all scenarios where a stainless steel BSP reducing bush adapter delivers a long-term, corrosion-resistant solution.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔵\u003c\/span\u003e\n    \u003cstrong\u003eThread Standard:\u003c\/strong\u003e BSP (British Standard Pipe) — parallel thread (BSPP). Not directly compatible with NPT or metric threads. Confirm your system uses BSP before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eSize format:\u003c\/strong\u003e Listed as Male OD × Female ID (e.g., 1\" × 1\/2\" = 1\" male BSP outer thread × 1\/2\" female BSP inner thread). Always measure your existing threads or check your pipe spec before selecting a size.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These BSP Stainless Steel Reducing Bush 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\u003eMale × Female BSP Thread Design\u003c\/strong\u003e — Hex-body construction allows wrench tightening for a secure, torque-controlled connection on BSP male to female reducing bush installations.\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 galvanic corrosion in water, air, and oil service — a clear advantage over brass or carbon steel in damp or outdoor environments.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e13 Size Combinations\u003c\/strong\u003e — Covers the most common BSP reducing bush sizes from 3\/4\" × 1\/2\" through 2\" × 1-1\/2\", reducing the need to stack multiple adapters in a single run.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMachined Thread Accuracy\u003c\/strong\u003e — Threads are cut to BSP tolerance for consistent hand-start engagement, reducing cross-threading risk during installation in tight spaces.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLeak-Resistant Sealing Surface\u003c\/strong\u003e — Smooth thread flanks pair with PTFE tape or thread sealant to form a reliable seal in water supply, compressed air, and hydraulic lines.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSingle or Pair Quantity Options\u003c\/strong\u003e — Order 1Pcs for a single repair or 2Pcs to keep a matched spare on hand — practical for maintenance crews and multi-point installations.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — BSP Reducing Bush Pipe Fittings\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\u003eBSP Male × Female Reducing Bush Adapter\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)\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 Sizes (Male × Female)\u003c\/th\u003e\n\u003ctd\u003e3\/4\" × 1\/2\", 1\/2\" × 1\/4\", 1\/2\" × 3\/8\", 1\" × 1\/2\", 1\" × 3\/4\", 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\", 1-1\/2\" × 1-1\/4\", 2\" × 1-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize Range (Male OD)\u003c\/th\u003e\n\u003ctd\u003e3\/4\" (≈19mm) to 2\" (≈51mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize Range (Female ID)\u003c\/th\u003e\n\u003ctd\u003e1\/4\" (≈8mm) to 1-1\/2\" (≈38mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity Options\u003c\/th\u003e\n\u003ctd\u003e1Pcs \/ 2Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eDrive \/ Installation\u003c\/th\u003e\n\u003ctd\u003eHex body — wrench tightened\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural stainless (brushed\/machined)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecommended Sealant\u003c\/th\u003e\n\u003ctd\u003ePTFE tape or thread sealant compound\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTypical Applications\u003c\/th\u003e\n\u003ctd\u003ePlumbing, hydraulics, pneumatics, irrigation, compressed air\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm for your size\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\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right size BSP reducing bush for my pipe?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe size format is \u003cstrong\u003eMale OD × Female ID\u003c\/strong\u003e — for example, 1\" × 1\/2\" means the male (outer) thread is 1 inch BSP and the female (inner) thread is 1\/2 inch BSP. Measure your existing pipe threads or check your fitting spec sheet. BSP sizes refer to nominal bore, not actual thread diameter — a 1\" BSP thread is typically about 33mm across the thread flanks. When in doubt, go one size up on the male end to ensure a secure fit.\u003c\/p\u003e\n        \u003cp\u003eQuick inch-to-mm reference: 1\/2\" ≈ 13mm nominal | 3\/4\" ≈ 19mm | 1\" ≈ 25mm | 1-1\/4\" ≈ 32mm | 1-1\/2\" ≈ 38mm | 2\" ≈ 51mm.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat thread standard do these reducing bushes use — are they compatible with NPT fittings?\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 widely used in plumbing, hydraulics, and pneumatic systems across the US, UK, Australia, and most of Asia. BSP is generally \u003cem\u003enot\u003c\/em\u003e compatible with NPT (National Pipe Taper) threads without a dedicated conversion adapter, as the thread angle and pitch differ. Confirm your system uses BSP before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these stainless steel reducing bushes be used outdoors or in wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. Stainless steel is inherently corrosion-resistant and is generally suitable for outdoor, marine, and high-humidity environments. In most residential and light commercial plumbing applications, stainless steel BSP fittings will typically outlast brass or galvanized alternatives in damp conditions. For prolonged saltwater or aggressive chemical exposure, contact us to confirm the alloy grade before installation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow much pressure can these BSP reducing bushes handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eStainless steel BSP reducing bushes typically handle working pressures in the range of \u003cstrong\u003e150–3,000 PSI\u003c\/strong\u003e depending on size and wall thickness — smaller sizes generally support higher pressure ratings. For high-pressure hydraulic or industrial applications, contact us to confirm the rated working pressure for your specific size before installation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need PTFE tape or thread sealant with these fittings?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. PTFE (Teflon) tape or a compatible thread sealant compound is recommended for all BSP parallel thread connections to ensure a leak-free seal. Apply \u003cstrong\u003e2–3 wraps of PTFE tape clockwise\u003c\/strong\u003e on the male threads before assembly. For higher-pressure or vibration-prone systems, a liquid thread sealant rated for your media (water, air, oil) is generally preferred over tape alone.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these reducing bushes suitable for gas line use?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eStainless steel BSP fittings are commonly used in water, compressed air, oil, and hydraulic systems. For gas line applications, local codes and regulations vary by jurisdiction — please consult a licensed plumber or gas fitter and verify compliance with your local standards before installation. We do not certify these fittings for gas service.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between the 1Pcs and 2Pcs quantity options?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe \u003cstrong\u003e1Pcs\u003c\/strong\u003e option includes a single reducing bush adapter of your chosen size. The \u003cstrong\u003e2Pcs\u003c\/strong\u003e option includes two identical adapters of the same size — useful for projects requiring matched pairs (e.g., both ends of a bypass loop) or to keep a spare on hand for maintenance. Both options ship the exact size you select.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I install a BSP reducing bush — do I need special tools?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eInstallation is straightforward: apply PTFE tape to the male threads, hand-thread the bush into the female port until snug, then tighten with an appropriately sized wrench on the hex body. Typically \u003cstrong\u003e1–2 turns past hand-tight\u003c\/strong\u003e is sufficient for a leak-free seal — avoid over-tightening, which can crack fittings or distort threads. No special tools are required beyond a standard pipe wrench or adjustable spanner.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your \u003cstrong\u003esize and quantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"3\u00264\" x 1\u00262\" \/ 1Pcs","offer_id":52336589406482,"sku":"FXL1574-0","price":3.6,"currency_code":"USD","in_stock":true},{"title":"3\u00264\" x 1\u00262\" \/ 2Pcs","offer_id":52336589439250,"sku":"FXL1574-1","price":5.29,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" x 1\u00264\" \/ 1Pcs","offer_id":52336589472018,"sku":"FXL1574-2","price":4.2,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" x 1\u00264\" \/ 2Pcs","offer_id":52336589504786,"sku":"FXL1574-3","price":6.05,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" x 3\u00268\" \/ 1Pcs","offer_id":52336589537554,"sku":"FXL1574-4","price":4.2,"currency_code":"USD","in_stock":true},{"title":"1\u00262\" x 3\u00268\" \/ 2Pcs","offer_id":52336589570322,"sku":"FXL1574-5","price":5.51,"currency_code":"USD","in_stock":true},{"title":"1\" x 1\u00262\" \/ 1Pcs","offer_id":52336589603090,"sku":"FXL1574-6","price":5.02,"currency_code":"USD","in_stock":true},{"title":"1\" x 1\u00262\" \/ 2Pcs","offer_id":52336589635858,"sku":"FXL1574-7","price":9.23,"currency_code":"USD","in_stock":true},{"title":"1\" x 3\u00264\" \/ 1Pcs","offer_id":52336589668626,"sku":"FXL1574-8","price":4.75,"currency_code":"USD","in_stock":true},{"title":"1\" x 3\u00264\" \/ 2Pcs","offer_id":52336589701394,"sku":"FXL1574-9","price":8.69,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 1\u00262\" \/ 1Pcs","offer_id":52336589734162,"sku":"FXL1574-10","price":12.09,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 1\u00262\" \/ 2Pcs","offer_id":52336589766930,"sku":"FXL1574-11","price":23.46,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 3\u00264\" \/ 1Pcs","offer_id":52336589799698,"sku":"FXL1574-12","price":11.36,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 3\u00264\" \/ 2Pcs","offer_id":52336589832466,"sku":"FXL1574-13","price":21.34,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 1\" \/ 1Pcs","offer_id":52336589865234,"sku":"FXL1574-14","price":10.27,"currency_code":"USD","in_stock":true},{"title":"11\u00264\" x 1\" \/ 2Pcs","offer_id":52336589898002,"sku":"FXL1574-15","price":19.71,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 1\u00262\" \/ 1Pcs","offer_id":52336589930770,"sku":"FXL1574-16","price":16.17,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 1\u00262\" \/ 2Pcs","offer_id":52336589963538,"sku":"FXL1574-17","price":30.99,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 3\u00264\" \/ 1Pcs","offer_id":52336589996306,"sku":"FXL1574-18","price":15.63,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 3\u00264\" \/ 2Pcs","offer_id":52336590029074,"sku":"FXL1574-19","price":30.45,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 1\" \/ 1Pcs","offer_id":52336590061842,"sku":"FXL1574-20","price":14.54,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 1\" \/ 2Pcs","offer_id":52336590094610,"sku":"FXL1574-21","price":27.81,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 11\u00264\" \/ 1Pcs","offer_id":52336590127378,"sku":"FXL1574-22","price":12.44,"currency_code":"USD","in_stock":true},{"title":"11\u00262\" x 11\u00264\" \/ 2Pcs","offer_id":52336590160146,"sku":"FXL1574-23","price":23.51,"currency_code":"USD","in_stock":true},{"title":"2\" x 11\u00262\" \/ 1Pcs","offer_id":52336590192914,"sku":"FXL1574-24","price":17.2,"currency_code":"USD","in_stock":true},{"title":"2\" x 11\u00262\" \/ 2Pcs","offer_id":52336590225682,"sku":"FXL1574-25","price":33.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of18_f0db0f75-9ebd-43d7-823d-e64bb8cd03eb.jpg?v=1781068741","url":"https:\/\/homediyer.com\/products\/bsp-reducing-bush-stainless-steel-male-female-pipe-adapter","provider":"HomeDIYer","version":"1.0","type":"link"}