{"product_id":"astralpool-hurlcon-mx-hx-jx-bypass-kit","title":"Astralpool \/ Hurlcon MX, HX, JX Bypass Kit","description":"\u003cp\u003e\u003cstrong\u003eAstralpool\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReplacement bypass assembly kit for selected AstralPool, Hurlcon and WWDG gas pool and spa heaters.\u003c\/p\u003e\n\u003cp style=\"color: #009bdb;\"\u003e\u003cstrong\u003eWe keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis bypass assembly is used inside the heater manifold\/water header and helps regulate internal water flow through the heat exchanger. A worn, damaged or missing bypass assembly can affect heater performance, water flow, pressure switch operation and overall heater reliability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCommon point of leaks in gas heaters. \u003c\/li\u003e\n\u003cli\u003eMay also be the source of F2 errors in the heaters, in addition to the \u003ca href=\"https:\/\/heaterandspaparts.com.au\/pages\/search-results-page?q=astralpool%20high%20limit\u0026amp;tab=products\u0026amp;sort_by=sales_amount\u0026amp;page=1\" target=\"_blank\" rel=\"noopener\"\u003ehigh-limit switches\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cp\u003eThis bypass assembly suits the following AstralPool \/ Hurlcon heater models:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHurlcon \/ AstralPool HX 70\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool HX 120\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool HX 150\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool MX 125\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool MX 150\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool MX 200\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool MX 250\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool MX 300\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool MX 400\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool JX 130\u003c\/li\u003e\n\u003cli\u003eHurlcon \/ AstralPool JX 160\u003c\/li\u003e\n\u003cli\u003eWWDG XH 110\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded In This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBypass spindle\u003c\/li\u003e\n\u003cli\u003eBypass disc\u003c\/li\u003e\n\u003cli\u003eO-ring\u003c\/li\u003e\n\u003cli\u003eTwo split pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePart Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e76021\u003c\/li\u003e\n\u003cli\u003e76040 x 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCheck the bypass spring condition while the heater is apart.\u003c\/li\u003e\n\u003cli\u003eIf the spring is corroded, weak, broken or badly worn, replace it at the same time.\u003c\/li\u003e\n\u003cli\u003eIf required, select the bypass spring from the Add-ons section on this listing.\u003c\/li\u003e\n\u003cli\u003eUse a suitable silicone lubricant on the O-ring during installation.\u003c\/li\u003e\n\u003cli\u003eTake care not to drop the bypass disc down into the pipework or heater manifold.\u003c\/li\u003e\n\u003cli\u003eConfirm correct orientation and movement of the bypass before reassembling the heater.\u003c\/li\u003e\n\u003cli\u003eInspect plastic manifold for wear. Badly worn manifolds may leak.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen This Part May Be Needed\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHeater has poor water flow through the heat exchanger\u003c\/li\u003e\n\u003cli\u003eSpring has corroded.\u003c\/li\u003e\n\u003cli\u003eF2 Errors\u003c\/li\u003e\n\u003cli\u003eBypass disc, spindle or pins are damaged or missing\u003c\/li\u003e\n\u003cli\u003eOld bypass components are brittle, worn or distorted\u003c\/li\u003e\n\u003cli\u003eThe heater is being serviced and the bypass assembly is due for replacement\u003c\/li\u003e\n\u003cli\u003eThere are flow, pressure or temperature issues related to the heater header assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGeneral Information\u003c\/h3\u003e\n\u003cp\u003eGas pool and spa heater parts should be inspected, diagnosed and installed by a suitably qualified and experienced person. Incorrect installation, poor water chemistry, blocked filters, restricted flow, incorrect plumbing or faulty safety components can all affect heater operation.\u003c\/p\u003e\n\u003cp\u003ePlease compare your existing bypass assembly, heater model and part numbers before ordering. Images and descriptions are provided to assist identification, but manufacturers may revise parts over time.\u003c\/p\u003e\n\u003ch3\u003eManufacturer Catalogues, Diagrams \u0026amp; Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNeed exploded views, spare part numbers, product numbers, diagrams, or more product information?   See the manufacturer catalogues:\n  \u003ca href=\"https:\/\/hasp.com.au\/pages\/Astralpool_Catalogue_2026\"\u003eAstralPool Catalogue 2026\u003c\/a\u003e  |  \u003ca href=\"https:\/\/hasp.com.au\/pages\/Zodiac_Catalogue_2026\"\u003eZodiac Catalogue 2026\u003c\/a\u003e\n\u003c\/strong\u003e\u003c\/p\u003e","brand":"Astralpool","offers":[{"title":"Default Title","offer_id":46706443845821,"sku":"76021 x1 | 76040 x2","price":29.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/astralpool-hurlcon-mx-hx-jx-bypass-kit-430.webp?v=1777245487","url":"https:\/\/heaterandspaparts.com.au\/products\/astralpool-hurlcon-mx-hx-jx-bypass-kit","provider":"Heater and Spa Parts","version":"1.0","type":"link"}