{"title":"Solar Thermal Pipe Fittings","description":"\u003ch2\u003eSolar Thermal Pipe Fittings – K-FLEX Twin Solar System\u003c\/h2\u003e\n\u003cp\u003eFind the complete range of brass fittings and accessories for K-FLEX Twin Solar pre-insulated stainless steel pipe systems. Whether you're connecting solar collectors to hot water cylinders, extending a pipe run, or completing a domestic renewable heating installation, this collection covers every connection point in the system.\u003c\/p\u003e\n\u003cp\u003eK-FLEX Twin Solar fittings are engineered for fast, tool-free assembly with reliable metal-to-metal sealing — significantly reducing installation time compared to traditional copper pipe systems.\u003c\/p\u003e\n\u003ch3\u003eWhat's in This Collection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompression Couplings — external and internal thread, DN16, DN20 and DN25\u003c\/li\u003e\n\u003cli\u003eStraight Fittings — DN16, DN20, DN25 in Ø18mm and Ø22mm\u003c\/li\u003e\n\u003cli\u003eDouble Couplings — for joining or extending pipe runs, DN16 to DN25\u003c\/li\u003e\n\u003cli\u003eOlives — replacement compression olives, DN16, DN20, DN25\u003c\/li\u003e\n\u003cli\u003eCopper Connection Sets — stainless to copper transition, 15mm and 18\/22mm\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/k-flex-twin-solar-pipe-accessories\"\u003eAccessories\u003c\/a\u003e — flange tools, tube clamps, gaskets, split rings and oval pipe supports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuying Guide – Choosing the Right Solar Thermal Fitting\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDN16 or DN20?\u003c\/strong\u003e DN16 is the standard size for most domestic solar thermal installations. DN20 is suited to larger systems or commercial applications with higher flow rates. DN25 is used in high-capacity commercial installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExternal or internal thread?\u003c\/strong\u003e External thread couplings connect to female-threaded ports on collectors and cylinders. Internal thread couplings connect to male-threaded ports. Check your collector and cylinder connection specifications before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConnecting to existing copper?\u003c\/strong\u003e Use the Copper Connection Sets, which include a clamping ring for a secure stainless-to-copper transition in either 15mm or 18\/22mm copper sizes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eAre these fittings compatible with all K-FLEX Twin Solar pipe?\u003c\/h4\u003e\n\u003cp\u003eYes. All fittings in this collection are designed specifically for K-FLEX Twin Solar pre-insulated corrugated stainless steel pipe in DN16, DN20 and DN25 sizes.\u003c\/p\u003e\n\u003ch4\u003eDo I need special tools to install these fittings?\u003c\/h4\u003e\n\u003cp\u003eNo. K-FLEX Twin Solar compression fittings are designed for quick, tool-free assembly. The flange tool (available in the Accessories product) is required only for forming pipe end flanges before fitting compression couplings.\u003c\/p\u003e\n\u003ch4\u003eCan these fittings be used with glycol solar fluid?\u003c\/h4\u003e\n\u003cp\u003eYes. All fittings are suitable for use with glycol\/water heat transfer fluid circuits as used in solar thermal systems.\u003c\/p\u003e\n\u003ch4\u003eWhat is the difference between a straight fitting and a double coupling?\u003c\/h4\u003e\n\u003cp\u003eA straight fitting connects Twin Solar pipe to a fixed connection point such as a manifold or cylinder port. A double coupling joins two sections of Twin Solar pipe together, used when extending a pipe run or making a repair.\u003c\/p\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/collections\/image_dcd4b22f-c277-4bb1-a6ae-20091c4473be.png?v=1778238103","url":"https:\/\/www.airconspares.com\/collections\/solar-thermal-pipe-fittings.oembed","provider":"Airconspares.com","version":"1.0","type":"link"}