{"product_id":"castair-comp-fitting-1","title":"Castair Comp. fitting","description":"\u003ch2\u003eCastair CA6 — Genie Unloader Compression Fitting (3\/8\" x 1\/4\")\u003c\/h2\u003e\n\u003cp\u003eThe Castair CA6 is a compression fitting in Castair's Genie unloader-type check valve series — specifically a 3\/8-inch inlet by 1\/4-inch outlet compression fitting. It mounts directly to 3\/8-inch copper discharge tubing via a compression fitting inlet, with a 1\/4-inch outlet that connects to the pressure switch unloader port or related plumbing. This smaller fitting is used on lighter-duty Castair compressors where the discharge tube is 3\/8-inch diameter.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrom Castair's published check valve data:\u003c\/strong\u003e The CA6 is listed under \"Genie Unloader Type\" with Comp. fitting inlet, 3\/8\" x 1\/4\" inlet-outlet sizing.\u003c\/p\u003e\n\n\u003ch2\u003eGenie Unloader Fitting Function\u003c\/h2\u003e\n\u003cp\u003eThe unloader fitting performs two jobs simultaneously in the air compressor discharge circuit:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck valve:\u003c\/strong\u003e Prevents backflow from the pressurized tank back into the pump head when the motor is off\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnloader:\u003c\/strong\u003e When the pressure switch opens and the motor stops, pressure trapped in the pump discharge side is released — the motor's next start is unloaded, preventing startup against full pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSigns that the CA6 needs replacement: motor struggles to start (tripping overload protector), persistent hissing from the pressure switch area after shutdown, or failure to maintain tank pressure between cycles.\u003c\/p\u003e\n\n\u003ch2\u003eCastair Genie Unloader Fitting Selection\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eInlet Type\u003c\/th\u003e\n\u003cth\u003eInlet x Outlet\u003c\/th\u003e\n\u003cth\u003eUsed For\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCA6\u003c\/td\u003e\n\u003ctd\u003eComp. fitting\u003c\/td\u003e\n\u003ctd\u003e3\/8\" x 1\/4\"\u003c\/td\u003e\n\u003ctd\u003eSmaller compressors, 3\/8\" discharge tube\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCA12\u003c\/td\u003e\n\u003ctd\u003eComp. fitting\u003c\/td\u003e\n\u003ctd\u003e1\/2\" x 3\/8\"\u003c\/td\u003e\n\u003ctd\u003eLarger compressors, 1\/2\" discharge tube\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePA6\u003c\/td\u003e\n\u003ctd\u003eNPT female\u003c\/td\u003e\n\u003ctd\u003e1\/4\" x 1\/4\"\u003c\/td\u003e\n\u003ctd\u003eNPT-threaded inlet version\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePA12\u003c\/td\u003e\n\u003ctd\u003eNPT female\u003c\/td\u003e\n\u003ctd\u003e3\/8\" x 3\/8\"\u003c\/td\u003e\n\u003ctd\u003eNPT-threaded inlet, larger size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhen to Replace This Fitting\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMotor hums and trips the overload at startup — unloading has failed, motor is starting against pressure\u003c\/li\u003e\n  \u003cli\u003eContinuous hissing from pressure switch area after compressor shuts off — unloader stuck open\u003c\/li\u003e\n  \u003cli\u003eTank won't hold pressure between motor cycles — check valve portion has failed\u003c\/li\u003e\n  \u003cli\u003eVisible corrosion, deformation, or leakage at the fitting body\u003c\/li\u003e\n  \u003cli\u003eScheduled maintenance — unloader fittings are wear items in high-cycle commercial compressors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch to your discharge tube OD — the CA6 requires a 3\/8-inch tube\u003c\/li\u003e\n  \u003cli\u003eThe 1\/4-inch outlet connects to the pressure switch unloader port — confirm thread type (usually 1\/4\" NPT female on the switch)\u003c\/li\u003e\n  \u003cli\u003eCompression fittings require clean, square-cut tube ends — deburr before installing\u003c\/li\u003e\n  \u003cli\u003eInspect the copper discharge tube end for corrosion or deformation before reusing the fitting seat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eWe stock Castair parts and can help you diagnose air compressor problems and identify the correct replacement fitting. Free shipping on qualifying orders. Free tech support at 866-217-0063. Full manufacturer warranty on genuine Castair parts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342530437333,"sku":"CA6","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-comp-fitting-1","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}