{"product_id":"3-4-bsp-brass-pipe-fittings-straight-elbow-tee-union-reducer","title":"3\/4\" BSP Brass Pipe Fittings – Straight, Elbow, Tee, Union \u0026 Reducer Connectors","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 fitting type for my pipe run?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the fitting shape to your pipe layout: use a straight connector to extend a run, an elbow (90°) to change direction, a tee or 3-way to branch off, a 4-way cross for intersecting lines, a union for easy disconnect points, and a plug or cap to terminate an open end. Reducer fittings let you step down from 3\/4\\\" to 1\/2\\\" where needed.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What thread standard do these fittings use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These fittings use BSP (British Standard Pipe) threads, specifically 3\/4\\\" BSP (also written as G3\/4 or DN20). BSP threads are tapered or parallel and are widely used in plumbing, HVAC, and gas systems across the US, UK, Europe, and Australia. They are generally not directly compatible with NPT (National Pipe Thread) fittings without an adapter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these brass fittings be used for outdoor or corrosion-prone environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass is naturally resistant to corrosion and performs well in most indoor plumbing, water supply, and mild outdoor applications. For highly corrosive environments or saltwater exposure, additional protection or alternative materials may be advisable. Always confirm suitability with your local code requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the typical pressure rating for these fittings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass pipe fittings of this type typically handle working pressures up to 150–200 PSI for water and general plumbing applications. Actual ratings depend on the specific fitting geometry and installation conditions. Contact us to confirm ratings for your specific use case.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these fittings suitable for gas lines?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass fittings are commonly used in low-pressure gas line applications. However, gas installations are subject to local codes and regulations. Always verify compliance with your local authority and use appropriate thread sealant rated for gas service.\"\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. For a leak-free connection, apply PTFE (Teflon) tape or a suitable pipe thread sealant compound to the male threads before assembly. This is standard practice for BSP threaded fittings in water and gas applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the reducer variants (14#–18#)?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The reducer variants allow you to transition between pipe sizes. Options 14# and 15# step down from 3\/4\\\" to 1\\\" (male or female), while 16# and 17# offer male-to-female or female-to-male reducer straights. Option 18# is a bushing reducer from 3\/4\\\" to 1\/2\\\", and 19# is a reducer elbow for directional size changes. Choose based on your pipe sizes and connection gender requirements.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e3\/4\" BSP Brass Pipe Fittings — Reliable Threaded Connections for Plumbing, Water \u0026amp; Gas Lines\u003c\/h2\u003e\n    \u003cp\u003eWhen a leaking joint or a missing connector brings your plumbing project to a halt, having the right fitting on hand makes all the difference. Whether you're a homeowner tackling a DIY repair, a plumber building out a new water supply line, or a contractor routing gas piping, these \u003cstrong\u003e3\/4\" BSP brass pipe fittings\u003c\/strong\u003e give you a complete toolkit of connection types in a single listing — no hunting across multiple SKUs.\u003c\/p\u003e\n    \u003cp\u003eEach variant is a single fitting sold individually, machined from solid brass with BSP (British Standard Pipe) threads at 3\/4\" (DN20) nominal size. The range covers 18 fitting configurations including straight connectors, 90° elbows, tees, 3-way and 4-way crosses, unions, plugs, caps, and reducer fittings that step down to 1\/2\" or up to 1\". All fittings feature standard BSP thread forms compatible with G3\/4 pipe systems. Sizes are expressed in nominal pipe diameter — the actual thread OD is typically around 26.4 mm (≈1.04\").\u003c\/p\u003e\n    \u003cp\u003eThese fittings are well suited for \u003cstrong\u003eresidential and commercial water supply lines\u003c\/strong\u003e, \u003cstrong\u003elow-pressure gas distribution systems\u003c\/strong\u003e, and \u003cstrong\u003eHVAC or compressed air plumbing\u003c\/strong\u003e where a durable, corrosion-resistant threaded connection is required. The union variant (10#) is especially useful for maintenance access points, while the 4-way cross (11#) simplifies manifold-style installations.\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 Compatibility:\u003c\/strong\u003e These fittings use \u003cstrong\u003e3\/4\" BSP (G3\/4 \/ DN20)\u003c\/strong\u003e threads. BSP threads are \u003cem\u003enot\u003c\/em\u003e directly interchangeable with NPT (National Pipe Thread) without an adapter. Verify your existing pipe thread standard before ordering.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These 3\/4\" BSP Brass 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\u003e18 Fitting Configurations in One Listing\u003c\/strong\u003e — Straight, elbow, tee, 3-way, 4-way, union, plug, cap, and reducer variants let you source every connection type for your 3\/4\" BSP pipe run from a single product page.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🟡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — Machined from brass alloy for natural corrosion resistance, good machinability, and long service life in water, air, and low-pressure gas applications — without the brittleness of cast iron or the cost of stainless.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReducer Options for Size Transitions\u003c\/strong\u003e — Multiple reducer variants (bushing, elbow, straight, male\/female combinations) make it straightforward to transition between 3\/4\" BSP and 1\/2\" or 1\" pipe sizes within the same system.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStandard BSP Thread Form\u003c\/strong\u003e — Conforms to BSP thread standards (G3\/4), ensuring compatibility with the broad range of BSP-threaded valves, gauges, and pipe fittings used in plumbing and HVAC systems worldwide.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔒\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLeak-Free Threaded Assembly\u003c\/strong\u003e — The precision-cut threads seat firmly with PTFE tape or pipe dope, creating a secure, leak-resistant joint suitable for pressurized water and gas lines when properly installed.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eIndividual Piece Pricing\u003c\/strong\u003e — Each variant is priced per fitting, so you buy exactly what you need — no forced bundle quantities. Ideal for repairs, replacements, or small-run installations where you need one or two specific connectors.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — 3\/4\" BSP Brass Pipe Fittings\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) — G3\/4 \/ DN20\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNominal Pipe Size\u003c\/th\u003e\n\u003ctd\u003e3\/4\" (DN20)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread OD (approx.)\u003c\/th\u003e\n\u003ctd\u003e26.4 mm (≈1.04\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass alloy\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\u003eAvailable Configurations\u003c\/th\u003e\n\u003ctd\u003e2-female straight, hexagonal 2-female straight, 2-male elbow, 2-female elbow, female-male elbow, male 3-way, female-male straight, union, female 4-way, male plug, female cap, reducer male (3\/4\" to 1\"), reducer female (3\/4\" to 1\"), female-to-male reducer straight, male-to-female reducer straight, bushing (3\/4\" to 1\/2\"), reducer elbow (3\/4\" to 1\/2\"), reducing 3-way (3\/4\" to 1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eReducer Size Options\u003c\/th\u003e\n\u003ctd\u003e3\/4\" BSP to 1\" BSP; 3\/4\" BSP to 1\/2\" BSP\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTypical Working Pressure\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm for your application\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual fitting (1 piece per order)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Systems\u003c\/th\u003e\n\u003ctd\u003eWater supply, low-pressure gas, HVAC, compressed air (verify local code)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNPT Compatibility\u003c\/th\u003e\n\u003ctd\u003eNot directly compatible — BSP-to-NPT adapter required\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eConfirm your thread standard before installing.\u003c\/strong\u003e BSP and NPT threads have different thread angles and pitches. Using mismatched threads can result in leaks or fitting damage. If unsure, measure your existing fitting or contact us.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right fitting type for my pipe run?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMatch the fitting shape to your pipe layout: use a \u003cstrong\u003estraight connector\u003c\/strong\u003e to extend a run, an \u003cstrong\u003eelbow (90°)\u003c\/strong\u003e to change direction, a \u003cstrong\u003etee or 3-way\u003c\/strong\u003e to branch off, a \u003cstrong\u003e4-way cross\u003c\/strong\u003e for intersecting lines, a \u003cstrong\u003eunion\u003c\/strong\u003e for easy disconnect points, and a \u003cstrong\u003eplug or cap\u003c\/strong\u003e to terminate an open end. Reducer fittings let you step down from 3\/4\" to 1\/2\" or up to 1\" where needed.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\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 fittings use \u003cstrong\u003eBSP (British Standard Pipe)\u003c\/strong\u003e threads, specifically 3\/4\" BSP (also written as G3\/4 or DN20). BSP threads are generally \u003cem\u003enot\u003c\/em\u003e directly compatible with NPT (National Pipe Thread) fittings without an adapter, as they differ in thread angle (55° BSP vs. 60° NPT) and pitch. Always verify your existing pipe thread standard before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these brass fittings be used outdoors or in corrosion-prone environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBrass is naturally resistant to corrosion and typically performs well in most indoor plumbing, water supply, and mild outdoor applications. For highly corrosive environments or direct saltwater exposure, additional protection or alternative materials may be advisable. Always confirm suitability with your local building code requirements.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the typical pressure rating for these fittings?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBrass pipe fittings of this type generally handle working pressures up to \u003cstrong\u003e150–200 PSI\u003c\/strong\u003e for water and general plumbing applications. Actual ratings depend on the specific fitting geometry, installation conditions, and the medium being conveyed. Contact us to confirm ratings for your specific use case before installation in high-pressure systems.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these fittings suitable for gas line installations?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBrass fittings are commonly used in low-pressure gas line applications. However, gas installations are subject to local codes and regulations. Always verify compliance with your local authority having jurisdiction (AHJ) and use a thread sealant rated for gas service (not standard PTFE tape, which may not be gas-rated in all jurisdictions).\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need PTFE tape or pipe dope to seal these fittings?\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 PTFE tape in the direction of the thread (clockwise when viewed from the end) for 2–3 wraps. This is standard practice for BSP threaded fittings in water and gas applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between the reducer variants (options 14# through 20#)?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe reducer variants allow you to transition between pipe sizes within your system:\u003c\/p\u003e\n        \u003cul class=\"hdiy-list\"\u003e\n          \u003cli\u003e\n\u003cstrong\u003e14# \u0026amp; 15#\u003c\/strong\u003e — Step from 3\/4\" BSP to 1\" BSP (male or female end)\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003e16# \u0026amp; 17#\u003c\/strong\u003e — Reducer straights combining male and female ends for 3\/4\"–1\" transitions\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003e18#\u003c\/strong\u003e — Bushing reducer from 3\/4\" to 1\/2\" (compact, screws into a larger fitting)\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003e19#\u003c\/strong\u003e — Reducer elbow for a directional change while stepping down from 3\/4\" to 1\/2\"\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003e20#\u003c\/strong\u003e — Reducing 3-way tee for branching while transitioning from 3\/4\" to 1\/2\"\u003c\/li\u003e\n        \u003c\/ul\u003e\n        \u003cp\u003eChoose based on your pipe sizes and the gender (male\/female) of your existing connections.\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\u003efitting type\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":"2# [3\u00264\" 2-female straight]","offer_id":52331459805458,"sku":"GLFBCQFGLBZSJ024353x1","price":13.1,"currency_code":"USD","in_stock":true},{"title":"3# [3\u00264\" hexagonal 2-female straight]","offer_id":52331459838226,"sku":"GLFBCQFGLBZSJ024354x1","price":11.29,"currency_code":"USD","in_stock":true},{"title":"4# [3\u00264\" 2-male  elbow]","offer_id":52331459870994,"sku":"GLFBCQFGLBZSJ024355x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"5# [3\u00264\" 2-female  elbow]","offer_id":52331459903762,"sku":"GLFBCQFGLBZSJ024356x1","price":13.19,"currency_code":"USD","in_stock":true},{"title":"6# [3\u00264\" female-male elbow]","offer_id":52331459936530,"sku":"GLFBCQFGLBZSJ024357x1","price":14.55,"currency_code":"USD","in_stock":true},{"title":"7# [3\u00264\" male  3-way]","offer_id":52331459969298,"sku":"GLFBCQFGLBZSJ024358x1","price":19.45,"currency_code":"USD","in_stock":true},{"title":"9# [3\u00264\" female-male straight]","offer_id":52331460002066,"sku":"GLFBCQFGLBZSJ024360x1","price":12.55,"currency_code":"USD","in_stock":true},{"title":"10# [3\u00264\" union]","offer_id":52331460034834,"sku":"GLFBCQFGLBZSJ024361x1","price":22.55,"currency_code":"USD","in_stock":true},{"title":"11# [3\u00264\" female  4-way]","offer_id":52331460067602,"sku":"GLFBCQFGLBZSJ024362x1","price":26.79,"currency_code":"USD","in_stock":true},{"title":"12# [3\u00264\" male plug]","offer_id":52331460100370,"sku":"GLFBCQFGLBZSJ024363x1","price":9.15,"currency_code":"USD","in_stock":true},{"title":"13# [3\u00264\" female cap]","offer_id":52331460133138,"sku":"GLFBCQFGLBZSJ024364x1","price":8.81,"currency_code":"USD","in_stock":true},{"title":"14# [3\u00264\" to 4 reducer male]","offer_id":52331460165906,"sku":"GLFBCQFGLBZSJ024365x1","price":10.85,"currency_code":"USD","in_stock":true},{"title":"15# [3\u00264\" to 4 reducer female]","offer_id":52331460198674,"sku":"GLFBCQFGLBZSJ024366x1","price":10.51,"currency_code":"USD","in_stock":true},{"title":"16# [female 3\u00264\" to male 4 reducer straight]","offer_id":52331460231442,"sku":"GLFBCQFGLBZSJ024367x1","price":10.51,"currency_code":"USD","in_stock":true},{"title":"17# [male 3\u00264\" to female 4 reducer straight]","offer_id":52331460264210,"sku":"GLFBCQFGLBZSJ024368x1","price":13.44,"currency_code":"USD","in_stock":true},{"title":"18# [3\u00264\" to 1\u00262\" bushing]","offer_id":52331460296978,"sku":"GLFBCQFGLBZSJ024369x1","price":8.13,"currency_code":"USD","in_stock":true},{"title":"19# [3\u00264\" to 1\u00262\" reducer elbow]","offer_id":52331460329746,"sku":"GLFBCQFGLBZSJ024370x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"20# [3\u00264\" to 1\u00262\" reducing 3-way]","offer_id":52331460362514,"sku":"GLFBCQFGLBZSJ024371x1","price":18.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_d20da781-7d6e-415f-ac10-29063ee85530.jpg?v=1781003606","url":"https:\/\/homediyer.com\/de\/products\/3-4-bsp-brass-pipe-fittings-straight-elbow-tee-union-reducer","provider":"HomeDIYer","version":"1.0","type":"link"}