{"product_id":"aqua-medic-tank-union","title":"Aqua Medic Tank Union","description":"\u003cp\u003e\u003cstrong\u003eA bulkhead fitting that seals a drilled tank or sump wall against a leak, in three sizes matched to standard 25, 32 and 40 mm pipe.\u003c\/strong\u003e The Aqua Medic Tank Union is a two-piece ABS fitting that passes through a drilled hole in glass or acrylic and gives you a threaded connection on the other side for rigid PVC plumbing — the standard way to run an overflow, drain or return through a tank or sump wall. It ships with the sealing ring and clamping nut needed to fit it, and its low-profile body lets the tank drain closer to empty than a taller fitting would.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree sizes\u003c\/strong\u003e — TV25, TV32 and TV40, matched to 25 mm, 32 mm and 40 mm OD pipe respectively.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eABS construction\u003c\/strong\u003e — resists the salt and chemical exposure of aquarium plumbing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealing ring and clamping nut included\u003c\/strong\u003e — no separate gasket purchase needed to fit it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact body\u003c\/strong\u003e — a shorter through-wall length than many bulkhead fittings, which helps low-profile sumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal fit\u003c\/strong\u003e — works on any drilled glass or acrylic panel at the matching hole size, not just Aqua Medic tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eTV25\u003c\/th\u003e\n\u003cth\u003eTV32\u003c\/th\u003e\n\u003cth\u003eTV40\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\u003ctd\u003e417.25\u003c\/td\u003e\n\u003ctd\u003e417.32\u003c\/td\u003e\n\u003ctd\u003e417.40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePipe connection (OD)\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003ctd\u003e40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass\/acrylic drill hole diameter\u003c\/td\u003e\n\u003ctd\u003e35 mm\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003ctd\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread size\u003c\/td\u003e\n\u003ctd\u003e1\"\u003c\/td\u003e\n\u003ctd\u003e1¼\"\u003c\/td\u003e\n\u003ctd\u003e1¾\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e46 mm\u003c\/td\u003e\n\u003ctd\u003e46 mm\u003c\/td\u003e\n\u003ctd\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal and nut included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOur own listed \"hole size\" ranges (32–35 mm \/ 42–45 mm \/ 55–60 mm) are close to but not identical with Aqua Medic's stated fixed drill diameters above — measure your actual drilled hole before ordering, or check with us if you're drilling to order.\u003c\/p\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003cp\u003eMatch the union to the pipe you're already running, or plan to run: TV25 for 25 mm pipe (a common size for smaller overflows and returns), TV32 for 32 mm, and TV40 for 40 mm, which suits higher-flow drains on larger systems.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTank union body (threaded barrel and back nut)\u003c\/li\u003e\n\u003cli\u003eSealing ring\u003c\/li\u003e\n\u003cli\u003eClamping nut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePVC pipe and fittings beyond the union itself\u003c\/li\u003e\n\u003cli\u003eDrilling of the glass or acrylic panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for any drilled glass or acrylic aquarium or sump wall at the matching hole diameter, connecting to standard metric PVC pipe. Not a solution for undrilled tanks, and not rated by the manufacturer for a stated maximum panel thickness — if you're working with unusually thick glass, confirm clearance before drilling.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eCheck the seal periodically for any weeping, and replace the sealing ring if it hardens or shows wear — this is a wear item on any bulkhead fitting over years of submersion.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatching-size PVC pipe and elbows for your drain or return run\u003c\/li\u003e\n\u003cli\u003eAqua Medic Universal Holder, for mounting any controller probes near the plumbing run\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered against manufacturing defects in addition to your rights under Australian Consumer Law. Standard freight — small and light.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat size do I need for a 25 mm overflow pipe?\u003c\/h4\u003e\n\u003cp\u003eTV25, which is sized for 25 mm OD pipe and a 35 mm drilled hole.\u003c\/p\u003e\n\u003ch4\u003eDoes it come with the seal already fitted?\u003c\/h4\u003e\n\u003cp\u003eIt ships with a sealing ring and clamping nut included, ready to fit to a correctly drilled panel.\u003c\/p\u003e\n\u003ch4\u003eWill it fit a tank from another brand?\u003c\/h4\u003e\n\u003cp\u003eYes — it's a universal bulkhead fitting for any drilled glass or acrylic panel at the matching hole diameter, not specific to Aqua Medic tanks.\u003c\/p\u003e\n\u003ch4\u003eWhat's the maximum glass thickness it will fit?\u003c\/h4\u003e\n\u003cp\u003eAqua Medic doesn't publish a maximum panel thickness for this fitting. If you're working with unusually thick glass or acrylic, check fit before committing to a drill size.\u003c\/p\u003e","brand":"Aqua Medic","offers":[{"title":"TV25 (Hole size 32-35mm)","offer_id":55285034090787,"sku":"AM41725","price":31.95,"currency_code":"AUD","in_stock":false},{"title":"TV32 (Hole size 42-45mm)","offer_id":55335402340643,"sku":"AM41732","price":33.95,"currency_code":"AUD","in_stock":false},{"title":"TV40 (Hole size 55-60mm)","offer_id":55335402373411,"sku":"AM41740","price":42.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aqua-medic-tank-union-43506874941731.webp?v=1790234313","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/aqua-medic-tank-union","provider":"Nicks AOT","version":"1.0","type":"link"}