{"product_id":"duotight-flow-stopper-automatic-keg-filler-transfer-shut-off","title":"Duotight Flow Stopper - Automatic Keg Filler \u0026 Transfer Shut-Off","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe Duotight Flow Stopper is the little device that ends one of kegging's most familiar moments: the keg that quietly filled while you stepped away, and the beer now running out of the gas post onto the floor. Attached to the gas post of the receiving keg, the Flow Stopper lets gas escape freely during filling — then the instant the keg is full, the rising liquid lifts the internal ball float against its stainless spring and seals the outlet automatically. Flow stops, nothing spills, and the transfer genuinely becomes set-and-forget: start it, walk away, and come back to a perfectly filled keg.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eWhat makes the Flow Stopper especially valuable is where it fits in modern transfer practice. Closed, pressure-driven transfers — from a FermZilla, Kegmenter, or any pressurisable fermenter into a purged keg — are the standard route to oxygen-free packaging for hop-forward beers, and they all share the same problem: you can't see inside the receiving keg, so knowing when to stop is guesswork. The Flow Stopper removes the guesswork mechanically. Its clear acrylic sight glass body even shows you the float doing its job, so you can watch the shut-off happen. The same trick serves keg-to-keg transfers after fining or filtering, and ordinary keg filling of any kind — anywhere liquid goes into a keg and overfilling is the risk.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eFor the best results, pair the Flow Stopper with a BlowTie spunding valve connected to its outlet via a short length of 8mm OD EVABarrier tubing. The BlowTie holds head pressure on the receiving keg during the transfer, letting you control the flow speed and dramatically reduce foaming — particularly important when transferring carbonated beer. Built on standard Duotight 8mm push-fit fittings, the Flow Stopper drops straight into any existing Duotight and EVABarrier setup, tool-free and leak-free.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eDuotight Flow Stopper — kit contents\u003cbr\u003e2× Duotight 8mm × 5\/8\" push-in fittings, 1× ball float, 1× stainless spring, 2× straight 8mm joiners, 1× acrylic sight glass with 5\/8\" male thread on both sides. Supplied in parts — simple assembly required. Colours of the float and joiners may vary.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e⸻\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eKey Features\u003c\/p\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAutomatic shut-off — ball float and stainless spring seal the gas post the moment the keg is full\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSet-and-forget keg filling — no watching, no guesswork, no beer on the floor\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eClear acrylic sight glass — watch the float and the shut-off happen\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIdeal for closed pressure transfers from FermZilla, Kegmenter, and other pressurisable fermenters\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDuotight 8mm push-fit fittings — tool-free, leak-free, drops into any EVABarrier setup\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePairs with a BlowTie spunding valve for pressure-controlled, low-foam transfers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e⸻\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eUsage\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eBest suited for: Automatic keg filling, closed fermenter-to-keg pressure transfers, keg-to-keg transfers after fining or filtering, oxygen-minimised packaging workflows\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eCompatible with: Ball lock keg gas posts, Duotight 8mm push-fit fittings, 8mm OD EVABarrier tubing, BlowTie spunding valve (recommended companion), FermZilla, Fermentasaurus, Kegmenter and other pressurisable fermenters\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eNote: Supplied in parts — assembly takes a couple of minutes and needs no tools. For carbonated transfers, use with a spunding valve on the outlet to hold head pressure and keep foaming down.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e⸻\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eQuick facts\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eBrand: KegLand (Duotight)\u003cbr\u003eType: Automatic keg filler \/ flow stopper\u003cbr\u003eMechanism: Ball float + stainless spring shut-off\u003cbr\u003eBody: Acrylic sight glass, 5\/8\" male thread both sides\u003cbr\u003eFittings: Duotight 8mm push-fit (2× 8mm × 5\/8\", 2× straight joiners)\u003cbr\u003eConnection point: Gas post of receiving keg\u003cbr\u003eUse: Keg filling, closed transfers, keg-to-keg transfers, overflow prevention\u003c\/p\u003e","brand":"Kegland","offers":[{"title":"Default Title","offer_id":57366897230199,"sku":"058.869.9","price":14.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0932\/6578\/9303\/files\/duotight-flow-stopper-automatic-keg-filler.jpg?v=1786374937","url":"https:\/\/craftbrew.nl\/products\/duotight-flow-stopper-automatic-keg-filler-transfer-shut-off","provider":"CraftBrew","version":"1.0","type":"link"}