{"product_id":"304-ss-bsp-full-socket-pipe-coupler-dn8-dn100","title":"304 Stainless Steel BSP Full Socket Pipe Coupler — DN8 to DN100","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBSP Full Socket Pipe Coupler in 304 Stainless Steel — Reliable Pipe Joining from DN8 to DN100\u003c\/h2\u003e\n\u003cp\u003eWhen a pipe joint fails mid-project — whether you're extending a water line, repairing a compressed air system, or building out an irrigation run — the last thing you want is a fitting that leaks, corrodes, or strips on the first turn. Plumbers, pipefitters, DIY homeowners, and facilities maintenance crews all face the same challenge: finding a BSP full socket pipe coupler that threads cleanly, seals reliably, and holds up over time without rusting out.\u003c\/p\u003e\n\u003cp\u003eEach unit is a full socket coupler (also called a straight coupling or pipe connector) machined from \u003cstrong\u003e304 stainless steel\u003c\/strong\u003e, featuring internal BSP threads on both ends to join two male-threaded pipes of the same nominal bore. Available in \u003cstrong\u003e11 sizes from DN8 (1\/4\") through DN100 (4\")\u003c\/strong\u003e — covering the full range of common residential and light commercial pipe sizes — and sold in packs of 1, 3, or 5 pieces so you can stock exactly what your job requires.\u003c\/p\u003e\n\u003cp\u003eThese BSP threaded pipe adapters are well suited for \u003cstrong\u003eresidential plumbing repairs and extensions\u003c\/strong\u003e, \u003cstrong\u003ecompressed air and pneumatic system assembly\u003c\/strong\u003e, and \u003cstrong\u003eirrigation and water supply line connections\u003c\/strong\u003e where a corrosion-resistant, reusable threaded coupling is needed. The straight socket design makes them a go-to stainless steel pipe connector for both new installations and retrofit work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eThread Compatibility:\u003c\/strong\u003e BSP (British Standard Pipe) — fits G-thread (parallel BSP) pipe systems. Sizes DN8 (1\/4\") to DN100 (4\"). \u003cstrong\u003eNot directly compatible with NPT threads\u003c\/strong\u003e — an NPT-to-BSP adapter is required for North American NPT pipe systems.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These BSP Full Socket Pipe Couplers\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFull Internal BSP Threading on Both Ends\u003c\/strong\u003e — Joins two male-threaded BSP pipes end-to-end with a single straight coupling, eliminating the need for unions or additional adapters in straightforward pipe extension work.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e304 Stainless Steel Construction\u003c\/strong\u003e — Resists rust and oxidation in fresh water, mild chemical, and general outdoor environments; a durable alternative to brass or galvanized iron pipe fittings for corrosion-prone installations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e11 DN Sizes in One Listing\u003c\/strong\u003e — DN8 (1\/4\") through DN100 (4\") covers the full spectrum of common BSP pipe sizes, so you can source the right stainless steel pipe connector without hunting across multiple listings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Quantities (1 \/ 3 \/ 5 pcs)\u003c\/strong\u003e — Order a single piece for a one-off repair, a 3-pack for a small project, or a 5-pack for larger installations or to keep spares on hand — priced to scale with quantity.\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 — Consistent thread form allows smooth hand-start assembly and proper wrench-tightening torque, reducing the risk of cross-threading that commonly occurs with lower-tolerance cast fittings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReusable and Disassemble-Friendly\u003c\/strong\u003e — Threaded BSP connections can be broken down and reassembled with fresh PTFE tape, making these stainless steel pipe adapters practical for temporary runs, test setups, or systems that require periodic maintenance access.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — BSP Full Socket Pipe Couplers\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\u003eFull Socket Pipe Coupler (Straight Coupling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) — G-thread parallel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes (DN \/ BSP)\u003c\/th\u003e\n\u003ctd\u003eDN8 (1\/4\") · DN10 (3\/8\") · DN15 (1\/2\") · DN20 (3\/4\") · DN25 (1\") · DN32 (1-1\/4\") · DN40 (1-1\/2\") · DN50 (2\") · DN65 (2.5\") · DN80 (3\") · DN100 (4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Type\u003c\/th\u003e\n\u003ctd\u003eFemale BSP internal thread × 2 (both ends)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Options\u003c\/th\u003e\n\u003ctd\u003e1 pc \/ 3 pcs \/ 5 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eMill \/ brushed stainless (natural 304 SS finish)\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 specific size and application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eGenerally suitable for -20°C to 200°C (−4°F to 392°F) in standard plumbing service\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplicable Standards\u003c\/th\u003e\n\u003ctd\u003eBSP \/ ISO 228 (G-thread parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Sealant\u003c\/th\u003e\n\u003ctd\u003ePTFE tape or pipe thread compound (not included)\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\u003eSizing Note:\u003c\/strong\u003e DN (Diameter Nominal) is a nominal bore designation, not the actual outer diameter of the fitting. Always match the DN number to your pipe's nominal bore size. If you are unsure, measure your pipe's outer diameter and cross-reference a BSP pipe sizing chart, or contact us before ordering.\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 DN size for my pipe?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eDN (Diameter Nominal) refers to the nominal bore of the pipe, not its outer diameter. Match the DN size to your existing pipe's nominal bore: DN8 = 1\/4\" BSP, DN10 = 3\/8\" BSP, DN15 = 1\/2\" BSP, DN20 = 3\/4\" BSP, DN25 = 1\" BSP, and so on up to DN100 = 4\" BSP. When in doubt, measure the outer diameter of your pipe and consult a BSP pipe sizing chart to confirm the correct nominal size before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are these stainless steel pipe couplers?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel pipe fittings are generally rated for working pressures up to 150 PSI (approximately 10 bar) in standard plumbing applications, though actual pressure ratings vary by pipe size and installation conditions. Larger DN sizes typically have lower pressure ratings. Always verify the pressure rating against your specific system requirements and consult a qualified engineer for high-pressure applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these couplers be used outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 304 stainless steel offers good corrosion resistance in most outdoor and wet environments, including fresh water, mild chemicals, and general outdoor exposure. It is typically suitable for garden irrigation, outdoor plumbing, and light industrial use. For highly corrosive environments — such as coastal saltwater exposure or aggressive chemical service — 316 stainless steel is generally recommended instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these fittings use, and are they compatible with 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 G-thread (parallel BSP, ISO 228). BSP is widely used in plumbing, hydraulics, and pneumatics across the UK, Europe, Australia, and Asia. \u003cstrong\u003eBSP threads are not directly compatible with NPT (National Pipe Thread)\u003c\/strong\u003e used in North America — the thread pitch and angle differ. A dedicated BSP-to-NPT adapter is required if you need to connect to an NPT system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is a full socket coupler and how is it different from a half socket or union?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA \u003cstrong\u003efull socket\u003c\/strong\u003e (full coupling) has internal BSP threads on \u003cem\u003eboth\u003c\/em\u003e ends, allowing you to join two externally threaded (male BSP) pipe sections end-to-end. A \u003cstrong\u003ehalf socket\u003c\/strong\u003e has one threaded end and one plain end (for welding or compression). A \u003cstrong\u003eunion\u003c\/strong\u003e is a three-piece fitting that allows disassembly without rotating the pipes. Use a full socket when both pipe ends are already male-threaded and you simply need to connect them in a straight line.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need thread sealant, and what type should I use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — thread sealant is generally required for a leak-free connection. \u003cstrong\u003ePTFE tape\u003c\/strong\u003e (plumber's tape) wrapped clockwise around the male threads is the most common and widely available option. Pipe thread compound (pipe dope) is an alternative for higher-pressure or gas applications. Apply sealant to the male threads only, not inside the socket. Thread sealant is not included with the fitting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these BSP couplers for gas lines?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel BSP fittings are in many cases used in gas piping systems. However, gas line installations are subject to local building codes, regulations, and inspection requirements that vary by region. Always consult a licensed plumber or gas fitter and verify compliance with your local codes before using any fitting in a gas application. Do not use PTFE tape alone for gas — use gas-rated thread sealant compound.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many pieces do I need for a typical repair or project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor a single pipe joint repair, 1 pc is typically sufficient. If you are running multiple branch connections or extending a pipe run with several joints, the 3-pack or 5-pack offers better value per piece. Many plumbers and maintenance teams order the 5-pack to keep spares on hand, since having the right size coupler available immediately avoids project delays.\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":"304 stainless steel \/ DN8【1\u00264\"】 \/ 1pcs","offer_id":52336715235602,"sku":"BEAR026648x1","price":2.28,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN8【1\u00264\"】 \/ 3pcs","offer_id":52336715268370,"sku":"BEAR026648x3","price":3.77,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN8【1\u00264\"】 \/ 5pcs","offer_id":52336715301138,"sku":"BEAR026648x5","price":5.68,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN10【3\u00268\"】 \/ 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1pcs","offer_id":52336715923730,"sku":"BEAR026655x1","price":10.88,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN50【2\"】 \/ 3pcs","offer_id":52336715956498,"sku":"BEAR026655x3","price":31.16,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN50【2\"】 \/ 5pcs","offer_id":52336715989266,"sku":"BEAR026655x5","price":51.37,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN65【2.5\"】 \/ 1pcs","offer_id":52336716022034,"sku":"BEAR026656x1","price":15.2,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN65【2.5\"】 \/ 3pcs","offer_id":52336716054802,"sku":"BEAR026656x3","price":43.94,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN65【2.5\"】 \/ 5pcs","offer_id":52336716087570,"sku":"BEAR026656x5","price":72.69,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN80【3\"】 \/ 1pcs","offer_id":52336716120338,"sku":"BEAR026657x1","price":19.34,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN80【3\"】 \/ 3pcs","offer_id":52336716153106,"sku":"BEAR026657x3","price":56.41,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN80【3\"】 \/ 5pcs","offer_id":52336716185874,"sku":"BEAR026657x5","price":93.47,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN100【4\"】 \/ 1pcs","offer_id":52336716218642,"sku":"BEAR026658x1","price":25.85,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN100【4\"】 \/ 3pcs","offer_id":52336716251410,"sku":"BEAR026658x3","price":75.86,"currency_code":"USD","in_stock":true},{"title":"304 stainless steel \/ DN100【4\"】 \/ 5pcs","offer_id":52336716284178,"sku":"BEAR026658x5","price":125.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of6_5c80d494-d4b3-43be-85f1-72ef94ead16f.jpg?v=1781095991","url":"https:\/\/homediyer.com\/de\/products\/304-ss-bsp-full-socket-pipe-coupler-dn8-dn100","provider":"HomeDIYer","version":"1.0","type":"link"}