{"product_id":"cpi-3-8-fpt-flush-spinweld-fitting-82","title":"CPI - 3\/8\" FPT Flush Spinweld Fitting - Female Pipe Thread - Part #82","description":"\u003cp\u003e\u003cstrong\u003eThe 3\/8\" FPT flush spinweld fitting\u003c\/strong\u003e is the small but critical threaded connection used when an RV tank plumbing setup needs a clean flush-mount female port. CPI Part #82 gives you a 3\/8\" Female Pipe Thread connection in a flush spinweld style, making it a practical choice for tank builds, tank repairs, and replacement plumbing points where a threaded fitting is required.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCPI 3\/8\" FPT flush spinweld fitting\u003c\/li\u003e\n  \u003cli\u003eFemale Pipe Thread (FPT) connection\u003c\/li\u003e\n  \u003cli\u003eFlush-mount fitting style for low-profile tank installations\u003c\/li\u003e\n  \u003cli\u003eSpinweld design for permanent installation into compatible plastic tanks\u003c\/li\u003e\n  \u003cli\u003ePart #82 \/ SKU 82\u003c\/li\u003e\n  \u003cli\u003eUseful for RV tank plumbing repairs, replacements, and custom builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This CPI 3\/8\" FPT Flush Spinweld Fitting?\u003c\/h2\u003e\n\u003cp\u003eWhen you need a small threaded tank connection, using the right fitting matters. This CPI flush spinweld fitting gives you a 3\/8\" Female Pipe Thread connection without a bulky raised profile, which helps when space is tight or when you want a cleaner finished tank surface. It is also a better choice than improvising with the wrong size fitting and ending up with leaks, poor thread engagement, or an awkward plumbing layout.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ch2\u003eCompare CPI Flush Spinweld Fittings\u003c\/h2\u003e\n  \u003cp\u003eNot sure which CPI tank fitting size is right for your project? Here is a quick comparison of nearby flush FPT options:\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background:#dc2626; color:white;\"\u003e\n        \u003cth style=\"padding:10px; border:1px solid #e5e7eb; text-align:left;\"\u003eModel\u003c\/th\u003e\n        \u003cth style=\"padding:10px; border:1px solid #e5e7eb; text-align:left;\"\u003eThread Size\u003c\/th\u003e\n        \u003cth style=\"padding:10px; border:1px solid #e5e7eb; text-align:left;\"\u003eStyle\u003c\/th\u003e\n        \u003cth style=\"padding:10px; border:1px solid #e5e7eb; text-align:left;\"\u003eBest For\u003c\/th\u003e\n        \u003cth style=\"padding:10px; border:1px solid #e5e7eb; text-align:left;\"\u003eView Details\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-left:3px solid #dc2626; background:#fef2f2;\"\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCPI Part #82\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e3\/8\" FPT\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eFlush spinweld\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eSmall threaded RV tank plumbing connections\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCurrent Product\u003c\/strong\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eCPI Part #83-LL\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e1\/2\" FPT\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eFlush fitting\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eStepping up to a slightly larger threaded port\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/rv-tank-fittings1-2-flush-fitting-1-1-8-hole-size\"\u003eView Details\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eCPI Part #79LL\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e3\/4\" FPT\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eFlush spinweld\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eLarger line connections that still need a flush profile\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/3-4-flush-fitting-1-3-8-hole-size-part-79\"\u003eView Details\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eCPI Part #55M\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e1-1\/4\" FPT\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eFlush spinweld with membrane\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003eBigger threaded tank connections with added sealing help\u003c\/td\u003e\n        \u003ctd style=\"padding:10px; border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/cpi-1-1-4-flush-fpt-spinweld-fitting-membrane-55m\"\u003eView Details\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Match the fitting to the thread size you actually need first, then choose flush vs. raised style based on your available clearance and tank layout.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e CPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 82\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size:\u003c\/strong\u003e 3\/8\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e FPT (Female Pipe Thread)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Style:\u003c\/strong\u003e Flush spinweld fitting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e RV tank plumbing connection point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eOne CPI 3\/8\" FPT flush spinweld fitting\u003c\/li\u003e\n  \u003cli\u003eNo additional hardware or installation tools included unless otherwise noted\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Models \u0026amp; Alternatives\u003c\/h2\u003e\n\u003cp\u003eIf you are comparing sizes or building out a larger tank plumbing setup, these related CPI fittings are good next options:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/rv-tank-fittings1-2-flush-fitting-1-1-8-hole-size\"\u003eCPI 1\/2\" FPT Flush Fitting - Part #83-LL\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3-4-flush-fitting-1-3-8-hole-size-part-79\"\u003eCPI 3\/4\" FPT Flush Spinweld Fitting - Part #79LL\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/cpi-1-1-4-flush-fpt-spinweld-fitting-membrane-55m\"\u003eCPI 1-1\/4\" Flush FPT Spinweld Fitting w\/Membrane - Part #55M\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat does FPT mean on this CPI fitting?\u003c\/h3\u003e\n\u003cp\u003eFPT stands for Female Pipe Thread. That means this fitting is designed to accept a matching male threaded plumbing connection.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is a flush spinweld fitting?\u003c\/h3\u003e\n\u003cp\u003eA flush spinweld fitting is designed to be spin-welded into a compatible plastic tank so the fitting sits in a low-profile, flush-style position instead of standing proud like a raised fitting.\u003c\/p\u003e\n\n\u003ch3\u003eIs this the same as CPI Part #82?\u003c\/h3\u003e\n\u003cp\u003eYes. This listing is for CPI Part #82, a 3\/8\" FPT flush spinweld fitting.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use this if I need a larger threaded fitting?\u003c\/h3\u003e\n\u003cp\u003eNo. If your plumbing layout needs a larger thread size, you should move up to the correct fitting size instead of forcing reducers into the wrong base fitting.\u003c\/p\u003e\n\n\u003ch3\u003eDoes this fitting include installation tools?\u003c\/h3\u003e\n\u003cp\u003eNo. This product is the fitting itself only unless otherwise noted. Spinweld installation requires the proper tooling and a compatible tank material.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Elkhart RV Parts?\u003c\/h2\u003e\n\u003cp\u003eWe carry hard-to-find RV tank fittings and plumbing parts that are easy to misidentify when you are buying from generic listings. That makes it easier to get the right CPI part the first time instead of losing time on returns or rework.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f3f4f6; border-left:4px solid #dc2626; padding:16px; margin-top:16px;\"\u003e\n  \u003cstrong\u003eNeed help matching the right CPI tank fitting?\u003c\/strong\u003e\u003cbr\u003e\n  Use our AI Live Chat to compare thread size, fitting style, and related options before you order.\n\u003c\/div\u003e","brand":"CPI","offers":[{"title":"Default Title","offer_id":49003572887704,"sku":"82","price":4.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/cpi-3-8-fpt-flush-spinweld-fitting-82-shopify-1.jpg?v=1779179871","url":"https:\/\/elkhartrvparts.com\/products\/cpi-3-8-fpt-flush-spinweld-fitting-82","provider":"Elkhart RV Parts","version":"1.0","type":"link"}