{"product_id":"ss304-full-socket-pipe-coupler-bsp-threaded-fitting","title":"Stainless Steel 304 Full Socket Pipe Coupler — BSP Threaded Fitting (1\/4\" to 4\")","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003c!-- ① OVERVIEW --\u003e\n\u003ch2\u003eSS304 Full Socket BSP Pipe Coupler — Reliable In-Line Connection for Threaded Pipe Systems\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eWhen a threaded pipe joint leaks, corrodes, or simply won't seal, the fitting is usually the weak link. Plumbers, pipefitters, and facility maintenance teams working with BSP pipe systems need a full socket coupler that threads on cleanly, holds pressure, and doesn't rust out after a season of service. These \u003cstrong\u003estainless steel 304 full socket BSP pipe couplers\u003c\/strong\u003e are built for exactly that job.\u003c\/p\u003e\n\u003cp\u003eEach coupler is machined from \u003cstrong\u003e304 stainless steel\u003c\/strong\u003e with female BSP threads on both ends, allowing two male-threaded pipes to be joined in-line. Available in 11 sizes from \u003cstrong\u003eBSP 1\/4\" (DN8)\u003c\/strong\u003e to \u003cstrong\u003eBSP 4\" (DN100)\u003c\/strong\u003e — covering the full range of common pipe nominal bores used in plumbing, HVAC, and light industrial piping. Sold individually (1 pcs per order); bulk quantity options available via variant selection.\u003c\/p\u003e\n\u003cp\u003eTypical applications include water supply line repairs, compressed air distribution networks, steam pipe connections, and industrial fluid transfer systems where BSP threaded pipe fittings are the standard. The full socket design is also widely used in fire suppression risers and chemical dosing lines where a secure, all-threaded joint is required.\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 Compatibility:\u003c\/strong\u003e BSP (British Standard Pipe) threads — BSPP (parallel, G-series) or BSPT (tapered, R-series). \u003cem\u003eNot interchangeable with NPT threads.\u003c\/em\u003e Confirm your pipe thread standard before ordering.\u003c\/div\u003e\n\u003c!-- ③ KEY FEATURES --\u003e\n\u003ch2\u003e✅ Key Features of These SS304 Full Socket BSP 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-Length Female BSP Threads on Both Ends\u003c\/strong\u003e — The full socket design threads onto two male BSP pipe ends for a secure, in-line pipe-to-pipe connection without welding or compression sleeves.\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, oxidation, and general corrosion in water, air, and mild chemical service — a significant durability advantage over carbon steel or brass fittings in wet environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003e11 Sizes from DN8 to DN100\u003c\/strong\u003e — Covers BSP 1\/4\" through BSP 4\", matching the nominal bore range used across residential plumbing, commercial HVAC, and light industrial BSP threaded pipe systems.\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 — BSP threads are machined to standard tolerances for consistent engagement with compatible male-threaded pipe ends, reducing the risk of cross-threading or incomplete seating.\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, Steam \u0026amp; Mild Chemicals\u003c\/strong\u003e — 304 stainless steel full socket couplers are generally rated for a broad range of media including potable water, compressed air, low-pressure steam, and non-aggressive process fluids.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🚚\u003c\/span\u003e \u003cspan\u003e\u003cstrong\u003eShips from US Warehouse\u003c\/strong\u003e — In-stock inventory means faster delivery for maintenance, repair, and operations (MRO) buyers who can't wait weeks for overseas shipments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n\u003ch2\u003e📐 Technical Specifications — BSP Full Socket Pipe Coupler\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 (Full Coupling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel 304 (SS304)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) — BSPP or BSPT; confirm variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003eBSP 1\/4\" (DN8), 3\/8\" (DN10), 1\/2\" (DN15), 3\/4\" (DN20), 1\" (DN25), 1-1\/4\" (DN32), 1-1\/2\" (DN40), 2\" (DN50), 2-1\/2\" (DN65), 3\" (DN80), 4\" (DN100)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Type\u003c\/th\u003e\n\u003ctd\u003eFemale BSP threaded both ends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Rating\u003c\/th\u003e\n\u003ctd\u003eSee variant options — typically higher for smaller sizes; contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm for your specific media and size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural stainless steel (mill\/machined finish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 pcs (single piece)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Media\u003c\/th\u003e\n\u003ctd\u003eWater, air, steam, oils, mild chemicals (confirm for aggressive media)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eBSP thread per ISO 228 (BSPP) \/ ISO 7 (BSPT)\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 BSP sizes refer to nominal pipe bore, not the actual thread or fitting outer diameter. Always verify the BSP size designation on your existing pipe or fitting before selecting a variant. When in doubt, measure the male thread OD and cross-reference a BSP thread chart.\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 BSP coupler size for my pipe?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the coupler size to your pipe's \u003cstrong\u003enominal bore\u003c\/strong\u003e, not its outer diameter. BSP 1\/4\" (DN8) fits pipes with roughly 13.16 mm (≈0.52\") male thread OD; BSP 1\" (DN25) fits approximately 33.25 mm (≈1.31\") OD. When in doubt, measure the male thread OD and compare to a BSP thread dimension table. Select your size from the variant dropdown above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pressure rating do these full socket couplers typically handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSS304 BSP full socket couplers generally handle working pressures in the range of \u003cstrong\u003e150–3000 PSI\u003c\/strong\u003e depending on size and wall thickness. Smaller sizes (1\/4\"–1\/2\") typically carry higher pressure ratings than larger sizes (2\"–4\"). Contact us to confirm the rated pressure for your specific size before use in high-pressure applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these couplers suitable for outdoor or corrosive environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 304 stainless steel provides good corrosion resistance in most outdoor, humid, and mildly corrosive environments. For highly chlorinated water, marine\/saltwater, or aggressive chemical service, \u003cstrong\u003e316 stainless steel\u003c\/strong\u003e is generally recommended instead. Contact us if you need 316 SS options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\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, which are \u003cem\u003enot\u003c\/em\u003e directly interchangeable with NPT (National Pipe Taper) threads common in North American plumbing. BSP threads have a 55° thread angle vs. NPT's 60°, and the pitch and OD dimensions differ. Always confirm your existing pipe thread standard before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need PTFE tape or thread sealant with these couplers?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor \u003cstrong\u003eBSPT (tapered)\u003c\/strong\u003e threads, PTFE tape or a thread sealant compound is generally recommended to achieve a leak-free joint. For \u003cstrong\u003eBSPP (parallel)\u003c\/strong\u003e threads, a face seal or bonded seal washer is typically used instead of tape. Check your fitting type and application requirements before assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is a full socket coupler and how does it differ from a half socket?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA \u003cstrong\u003efull socket coupler\u003c\/strong\u003e (full coupling) has female BSP threads on \u003cem\u003eboth\u003c\/em\u003e ends running the full length of the fitting, joining two male-threaded pipe ends in-line. A \u003cstrong\u003ehalf socket\u003c\/strong\u003e has one threaded end and one plain\/weld end. Full sockets are the standard choice when connecting two threaded pipes end-to-end without welding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat fluids or media are these fittings compatible with?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSS304 full socket couplers are generally compatible with \u003cstrong\u003ewater, compressed air, low-pressure steam, oils, and many mild chemicals\u003c\/strong\u003e. They are not recommended for strong acids, high-concentration chlorides, or highly alkaline solutions. Always confirm media compatibility with your specific operating conditions before installation.\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\u003esize\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"BSP 1\u00264\" (DN8) \/ 1 pcs","offer_id":52336717431058,"sku":"PENG026648x1","price":3.47,"currency_code":"USD","in_stock":true},{"title":"BSP 3\u00268\" (DN10) \/ 1 pcs","offer_id":52336717463826,"sku":"PENG026649x1","price":3.47,"currency_code":"USD","in_stock":true},{"title":"BSP 1\u00262\" (DN15) \/ 1 pcs","offer_id":52336717496594,"sku":"PENG026650x1","price":3.66,"currency_code":"USD","in_stock":true},{"title":"BSP 3\u00264\" (DN20) \/ 1 pcs","offer_id":52336717529362,"sku":"PENG026651x1","price":5.15,"currency_code":"USD","in_stock":true},{"title":"BSP 1\" (DN25) \/ 1 pcs","offer_id":52336717562130,"sku":"PENG026652x1","price":5.78,"currency_code":"USD","in_stock":true},{"title":"BSP 1 1\u00264\" (DN32) \/ 1 pcs","offer_id":52336717594898,"sku":"PENG026653x1","price":7.74,"currency_code":"USD","in_stock":true},{"title":"BSP 1 1\u00262\" (DN40) \/ 1 pcs","offer_id":52336717627666,"sku":"PENG026654x1","price":12.04,"currency_code":"USD","in_stock":true},{"title":"BSP 2\" (DN50) \/ 1 pcs","offer_id":52336717660434,"sku":"PENG026655x1","price":18.16,"currency_code":"USD","in_stock":true},{"title":"BSP 2 1\u00262\" (DN65) \/ 1 pcs","offer_id":52336717693202,"sku":"PENG026656x1","price":25.28,"currency_code":"USD","in_stock":true},{"title":"BSP 3\" (DN80) \/ 1 pcs","offer_id":52336717725970,"sku":"PENG026657x1","price":32.3,"currency_code":"USD","in_stock":true},{"title":"BSP 4\" (DN100) \/ 1 pcs","offer_id":52336717758738,"sku":"PENG026658x1","price":43.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of8_f8076e1b-e6e8-4b24-a778-46b4442b0328.jpg?v=1781096338","url":"https:\/\/homediyer.com\/de\/products\/ss304-full-socket-pipe-coupler-bsp-threaded-fitting","provider":"HomeDIYer","version":"1.0","type":"link"}