{"product_id":"volute-3-viron-ctx-e-series","title":"Astralpool Volute (Wet End) - CTX \/ E-Series MkII, Nov 2020 SP40031","description":"\u003c!-- HASP-FLP-1.0 | SKU SP40031 | rule CTX-VOL-1.0 | canary: volute-mkii-echo --\u003e\n\u003ch3\u003eAstralpool Volute (Wet End) - CTX \/ Viron \/ E-Series MkII, Nov 2020 SP40031\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine Astralpool \u003cstrong\u003eMkII\u003c\/strong\u003e volute, part number \u003cstrong\u003eSP40031\u003c\/strong\u003e (catalogue 40031). The volute is the main pump body (wet end) that houses the impeller, diffuser and basket. This is the current-style wet end introduced from \u003cstrong\u003eNovember 2020\u003c\/strong\u003e, used across the CTX MkII, Viron and E-Series MkII pumps.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003ePhysically Stocked, unlike most \"drop-shipping\" websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003eShipped from VIC, NSW, WA, QLD\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThree Generations — Order the Right One\u003c\/h3\u003e\n\u003cp\u003eAstralpool changed the CTX wet end twice. The volute and its matching seal plate must come from the same generation as your pump, or they will not bolt up and seal correctly. Identify your pump's era before ordering:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGeneration\u003c\/th\u003e\n\u003cth\u003eVolute (wet end)\u003c\/th\u003e\n\u003cth\u003eSeal plate\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries 1 — old style, pre-Aug 2014\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/volute-ctx-bskt-series-1\"\u003e4007502\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4009002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries 2 — Aug 2014 to 2018\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/volute-ctx-series2-aug14\"\u003e40097\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/seal-plate-series2-ctx-aug14-o\"\u003e40098\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMkII — Nov 2020 onwards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSP40031 — this product\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/seal-plate-3-ctx-viron-nov-20\"\u003eSP40030\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf you are not sure which generation your pump is, \u003ca href=\"mailto:info@hasp.com.au\"\u003esend us a photo of the pump and its data plate\u003c\/a\u003e and we will identify it. This is an expensive part to order wrongly.\u003c\/p\u003e\n\n\u003ch3\u003eFits These MkII Pumps\u003c\/h3\u003e\n\u003cp\u003eThe MkII wet end and its matching seal plate (SP40030) are shared across a wide range of current-generation pumps:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCTX MkII\u003c\/strong\u003e — CTX 280, CTX 360C, CTX 400, CTX 500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-Series MkII\u003c\/strong\u003e — 140C, 170C, 230C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViron P320 \u0026amp; P520 XT\u003c\/strong\u003e (Nov 2020 to June 2021 build)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstralPool XP\u003c\/strong\u003e pump range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat the Volute Is\u003c\/h3\u003e\n\u003cp\u003eThe volute is the moulded pump body that the motor bolts onto. It holds the basket, the diffuser and the impeller, and forms the pressure chamber that converts the impeller's spin into water flow. It is replaced when the body is cracked, when a union or port thread has failed, or when the internal sealing faces are damaged beyond what a new seal plate and o-rings will fix.\u003c\/p\u003e\n\n\u003ch3\u003eRelated MkII Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSP40030\u003c\/strong\u003e — seal plate, MkII Nov 2020 (\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/seal-plate-3-ctx-viron-nov-20\"\u003ebuy here\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70022\u003c\/strong\u003e — seal plate o-ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75509\u003c\/strong\u003e — mechanical seal, current pumps (\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/3-4-mechanical-seal\"\u003ebuy here\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e78772\u003c\/strong\u003e — seal plate to wet end bolts (x6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40065\u003c\/strong\u003e — basket (\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/astralpool-hurlcon-pump-strainer-basket-tx-cx-ctx-p280-eco-e-series\"\u003ebuy here\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40089\u003c\/strong\u003e — lid complete with o-ring (\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/complete-lid-assembly-for-astralpool-hurlcon-pumps-ctx-cx-tx-e-viron-xt-also-aquatight\"\u003ebuy here\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eImpeller — sized to your model, see the \u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/impeller-ctx-280-pump-cx280\"\u003eCTX\u003c\/a\u003e or \u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/astralpool-p320-xt-impeller\"\u003eViron XT\u003c\/a\u003e impeller ranges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know if my pump is MkII?\u003c\/strong\u003e\u003cbr\u003eMkII wet ends were fitted from November 2020. They cover the CTX MkII, E-Series MkII, AstralPool XP range, and the Viron P320\/P520 XT of the Nov 2020 to June 2021 build. If unsure, send us a photo of the data plate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I fit a Series 1 or Series 2 volute instead?\u003c\/strong\u003e\u003cbr\u003eThe generations are not cross-compatible as a mix. The volute, seal plate and their o-rings changed together. Match the whole wet end to one generation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this cover the AstralPool XP pumps?\u003c\/strong\u003e\u003cbr\u003eYes. The MkII wet end and SP40030 seal plate are listed for the AstralPool XP range alongside the CTX MkII and Viron XT pumps.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a genuine Astralpool part?\u003c\/strong\u003e\u003cbr\u003eYes. We are an authorised Astralpool and Fluidra dealer and warranty agent.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturer Catalogues, Diagrams \u0026amp; Part Numbers\u003c\/h3\u003e\n\u003cp\u003eNeed exploded views, spare part numbers, product numbers or diagrams? See the manufacturer catalogue: \u003ca href=\"https:\/\/hasp.com.au\/pages\/Astralpool_Catalogue_2026\"\u003eAstralpool Catalogue 2026\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering:\u003c\/strong\u003e confirm this part is correct for your pump. Use the catalogue above, seek professional assistance, or \u003ca href=\"mailto:info@hasp.com.au\"\u003econtact us\u003c\/a\u003e with photos of your existing part, model details, serial numbers and any labels. As with all products, this must be diagnosed and fitted by a qualified and experienced person. This is a \u003ca href=\"https:\/\/heaterandspaparts.com.au\/policies\/refund-policy\" rel=\"noopener\" target=\"_blank\"\u003especial-order\u003c\/a\u003e item.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCommon search terms: Astralpool SP40031, 40031 volute, CTX MkII wet end, Viron XT volute Nov 2020, AstralPool XP pump body, E-Series MkII volute.\u003c\/em\u003e\u003c\/p\u003e\n\u003c!-- HASP-FLP-1.0 end | canary: volute-mkii-echo --\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How do I know if my pump is MkII?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"MkII wet ends were fitted from November 2020. They cover the CTX MkII, E-Series MkII, AstralPool XP range, and the Viron P320\/P520 XT of the Nov 2020 to June 2021 build. If unsure, send us a photo of the data plate.\"}},{\"@type\":\"Question\",\"name\":\"Can I fit a Series 1 or Series 2 volute instead?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The generations are not cross-compatible as a mix. The volute, seal plate and their o-rings changed together. Match the whole wet end to one generation.\"}},{\"@type\":\"Question\",\"name\":\"Does this cover the AstralPool XP pumps?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The MkII wet end and SP40030 seal plate are listed for the AstralPool XP range alongside the CTX MkII and Viron XT pumps.\"}},{\"@type\":\"Question\",\"name\":\"Is this a genuine Astralpool part?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. We are an authorised Astralpool and Fluidra dealer and warranty agent.\"}}]}]}\n\u003c\/script\u003e","brand":"ASTRALPOOL","offers":[{"title":"Default Title","offer_id":46836050854077,"sku":"SP40031","price":109.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/astralpool-volute-wet-end-ctx-e-series-mkii-nov-2020-sp40031-pool-pump-parts-989.webp?v=1784679728","url":"https:\/\/heaterandspaparts.com.au\/zh-hans\/products\/volute-3-viron-ctx-e-series","provider":"Heater and Spa Parts","version":"1.0","type":"link"}