{"product_id":"raccord-union-inox-femelle-a-souder-316l-pn40","title":"Stainless steel union, female\/butt weld 316L, PN 40, BSP threaded","description":"\u003cp\u003e\u003cstrong\u003eStainless steel union, female\/butt weld 316L, PN 40\u003c\/strong\u003e, machined, from 1\/2\" to 2\" (DN15 to DN50): its \u003cstrong\u003eBSP\u003c\/strong\u003e tapped end (Rp to ISO 7-1) takes an R male thread, its plain end is butt welded (BW) to the pipe, and the nut undoes to open the joint. PN 40, drinking water compliant, for all fluids compatible with stainless steel.\u003c\/p\u003e\n\u003ch2\u003eDescription of the machined stainless steel union, female\/butt weld 316L PN 40\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e3-piece stainless steel union\u003c\/strong\u003e combines two \u003cstrong\u003e316L\u003c\/strong\u003e stainless steel ends and a \u003cstrong\u003eCF8M\u003c\/strong\u003e stainless steel nut. 316L is the low-carbon version of 316. At the conical seat, the seal is metal to metal. Dismantling the union requires neither cutting the pipe nor unscrewing the threaded component.\u003c\/p\u003e\n\u003cp\u003eThe female end is 6-sided. The BW end is plain and is butt welded: its dimension Ø ranges from 21.3 to 60.3 mm.\u003c\/p\u003e\n\u003ch3\u003eStainless steel female\/butt weld union 316L: technical specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:.8em 0\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:.92rem;margin:0\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eMaterial\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003e316L stainless steel ends, CF8M stainless steel nut\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eManufacture\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eMachined conical (taper) seat union\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eStandard\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eISO 4144\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eType\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003e3-piece: a female end, a weld end and a nut\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eSeal at the seat\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eMetal to metal\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eShape\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003e6-sided female end, plain weld end, nut with flats\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eThread\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eRp tapped (parallel) to ISO 7-1 (BSP). Mates with an R male thread (taper). Not compatible with NPT\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eWeld end\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003ePlain BW end, for butt welding, Ø 21.3 to 60.3 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eConnection\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eFemale\/butt weld\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eNominal pressure\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003ePN 40. Permissible pressure falls as temperature rises\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eTemperature\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eStated range −20\/+220 °C, with no high-temperature pressure values: consult us for hot applications\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eFluids\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003eAll fluids compatible with stainless steel\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eSizes\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003e6 sizes, from 1\/2\" to 2\"\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;font-weight:700;text-align:left;background:#f5f0e6;white-space:nowrap\"\u003eCompliance\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:8px 12px;text-align:left\"\u003e4MS; drinking water: French order of 25 June 2020\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003ePressure and temperature\u003c\/h3\u003e\n\u003cp\u003eThis union is rated \u003cstrong\u003ePN 40\u003c\/strong\u003e. The permissible pressure falls as temperature rises, and we have no high-temperature pressure curve for this part. The stated range of −20 to +220 °C therefore does not mean PN 40 across the whole range. For hot applications, \u003ca href=\"\/pages\/contact\"\u003econtact us\u003c\/a\u003e before choosing.\u003c\/p\u003e\n\u003ch3\u003eCertification and compliance\u003c\/h3\u003e\u003cp\u003eAccording to the technical data sheet for the series:\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003e4MS\u003c\/strong\u003e: compliant with the 4MS requirements, the harmonized European rules for materials and products in contact with drinking water.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eDrinking water\u003c\/strong\u003e: compliant with the French order (arrêté) of 25 June 2020 on metallic materials and products in contact with water intended for human consumption.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eUses and installation advice\u003c\/h3\u003e\n\u003cp\u003eThis union is used on drinking water systems and on circuits carrying fluids compatible with stainless steel. Check the fluid’s compatibility with 316L and CF8M.\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003e\u003cstrong\u003eWelding\u003c\/strong\u003e: to be carried out by a qualified welder. The welding process and filler metal depend on the installation. Dismantle the union before welding to protect the conical seat.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eThread sealing\u003c\/strong\u003e: an Rp\/R joint seals on the threads, using PTFE or jointing compound suited to the fluid and the working temperature.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eGalling\u003c\/strong\u003e: with stainless steel on stainless steel, the thread can gall. Screw in gradually, without forcing.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eTightening\u003c\/strong\u003e: hold the female end with an open-ended or adjustable spanner on its flats and tighten the nut the same way, not with pipe grips or pliers, which mark stainless steel.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eTechnical drawing\u003c\/h3\u003e\n\u003cfigure style=\"margin:1.2em 0;text-align:center;padding:0\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2439\/6099\/files\/dessin-technique-raccord-union-inox-femelle-a-souder-pn40-bsp.png\" alt=\"Technical drawing of the stainless steel female\/butt weld 316L union PN 40, dimensions L, M1, M3 and Ø, Rp thread\" loading=\"lazy\" decoding=\"async\" width=\"1258\" height=\"946\" fetchpriority=\"low\" style=\"max-width:100%;height:auto;display:block;margin:0 auto;border:1px solid #eee;border-radius:4px;background:#fff\"\u003e\u003cfigcaption style=\"font-size:.85rem;color:#666;margin-top:.4em;font-style:italic\"\u003eDimensioned drawing – dimensions in millimetres\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003ch3\u003eDimensions (mm)\u003c\/h3\u003e\n\u003cp\u003eL: overall length. Ø: outside diameter of the weld end. Rp: tapped thread, Rp size column. M1: length of the nut. M3: length of the flats on the female end. Dimensions in millimetres, PN in bar, weight in kilograms.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:.8em 0\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:.88rem;margin:0\"\u003e\u003cthead\u003e\u003ctr\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eRp size\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eFrench size\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eØ\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eM1\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eM3\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eL\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003ePN (bar)\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eWeight (kg)\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\/2\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e15x21\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e21.3\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e16\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e9\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e38\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e0.101\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e3\/4\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e20x27\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e26.9\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e17\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e9\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e41\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e0.151\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e26x34\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e33.7\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e18\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e9\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e43\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e0.207\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\"1\/4\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e33x42\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e42.4\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e18\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e10\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e48\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e0.278\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\"1\/2\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40x49\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e48.3\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e18\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e10\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e50\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e0.406\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e2\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e50x60\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e60.3\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e20\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e12\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e56\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e0.512\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eSize conversion\u003c\/h3\u003e\n\u003cp\u003eConversion between the French size designation, inches, DN and the outside diameter stated in the designation (a rounded value, not a pipe dimension). On the weld side, go by dimension Ø.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:.8em 0\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:.88rem;margin:0\"\u003e\u003cthead\u003e\u003ctr\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003eFrench size\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003e15x21\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003e20x27\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003e26x34\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003e33x42\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003e40x49\u003c\/th\u003e\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;background:#f5f0e6;font-weight:700\"\u003e50x60\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;font-weight:700\"\u003eInches\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\/2\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e3\/4\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\"\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\"1\/4\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e1\"1\/2\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e2\"\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;font-weight:700\"\u003eDN\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003eDN15\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003eDN20\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003eDN25\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003eDN32\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003eDN40\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003eDN50\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap;font-weight:700\"\u003eOD (French size)\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e21 mm\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e27 mm\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e34 mm\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e42 mm\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e49 mm\u003c\/td\u003e\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;text-align:center;white-space:nowrap\"\u003e60 mm\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eStainless steel female\/butt weld union 316L: frequently asked questions\u003c\/h3\u003e\n\u003ch4\u003ePN 40 or PN 20?\u003c\/h4\u003e\u003cp\u003eThe choice depends on the working pressure at the working temperature. A PN 20 union is not suitable if your installation requires PN 40. The \u003ca href=\"\/products\/stainless-steel-union-female-butt-weld-316-pn20\"\u003ePN 20 version\u003c\/a\u003e covers 1\/4\" to 2\", with published high-temperature values.\u003c\/p\u003e\n\u003ch4\u003eWhat is the pressure rating at high temperature?\u003c\/h4\u003e\u003cp\u003eWe have no figure for this part. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the size, fluid, temperature and working pressure.\u003c\/p\u003e\n\u003ch4\u003eWhich parts are 316L?\u003c\/h4\u003e\u003cp\u003eBoth ends, on the tapped side as well as the weld side. The nut is CF8M.\u003c\/p\u003e\n\u003ch4\u003eBSP or NPT thread?\u003c\/h4\u003e\u003cp\u003eBSP to ISO 7-1: Rp parallel tapped thread, for use with an R taper male thread. This union is not compatible with NPT.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe appearance of the part may vary depending on the batch in stock. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e for confirmation.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eSee also\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFull range:\u003c\/strong\u003e \u003ca href=\"\/collections\/stainless-steel-bsp-pipe-fittings\"\u003eall stainless steel BSP fittings\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOther stainless steel fittings:\u003c\/strong\u003e \u003ca href=\"\/products\/stainless-steel-union-male-butt-weld-316l-pn40\"\u003estainless steel male\/butt weld union 316L PN 40\u003c\/a\u003e for a tapped component, \u003ca href=\"\/products\/stainless-steel-butt-weld-union-316l-pn40\"\u003estainless steel butt weld union 316L PN 40\u003c\/a\u003e for welding at both ends, \u003ca href=\"\/products\/stainless-steel-union-female-female-316l-pn40\"\u003estainless steel female\/female union 316L PN 40\u003c\/a\u003e for screwing at both ends.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOther materials:\u003c\/strong\u003e \u003ca href=\"\/collections\/brass-fittings\"\u003ebrass fittings\u003c\/a\u003e, \u003ca href=\"\/collections\/black-unions\"\u003eblack malleable iron unions\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUseful guides:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"\/blogs\/tutorials-1\/plumbing-threads-guide-complete-bspt-bspp-npt\"\u003eGuide to plumbing threads\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"\/blogs\/tutorials-1\/how-to-screw-threaded-plumbing-fittings-and-pipes\"\u003eHow to screw fittings and pipes together\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n","brand":"Home Invasion","offers":[{"title":"1\/2\" × Ø 21.3 mm","offer_id":55701968748871,"sku":"8004430001500","price":30.0,"currency_code":"USD","in_stock":true},{"title":"3\/4\" × Ø 26.9 mm","offer_id":55701968781639,"sku":"8004430002000","price":48.0,"currency_code":"USD","in_stock":true},{"title":"1\" × Ø 33.7 mm","offer_id":55701968814407,"sku":"8004430002600","price":58.0,"currency_code":"USD","in_stock":true},{"title":"1\"1\/4 × Ø 42.4 mm","offer_id":55701968847175,"sku":"8004430003300","price":85.0,"currency_code":"USD","in_stock":true},{"title":"1\"1\/2 × Ø 48.3 mm","offer_id":55701968879943,"sku":"8004430004000","price":117.0,"currency_code":"USD","in_stock":true},{"title":"2\" × Ø 60.3 mm","offer_id":55701968912711,"sku":"8004430005000","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2439\/6099\/files\/raccord-union-inox-femelle-a-souder-316l-pn40-bsp-1.jpg?v=1793802724","url":"https:\/\/home-invasion.com\/products\/stainless-steel-union-female-butt-weld-316l-pn40","provider":"Home Invasion","version":"1.0","type":"link"}