Duotight Flow Stopper

  • Item #Z77
  • Price: $14.99
  • Part #KL09393
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In stock, will ship on Saturday, December 3

Duotight Flow Stopper shuts off flow automatically when your keg is full. See video below for full description. Also known as an Automatic Keg Filler.

This is shipped in parts form, and needs assembly.


Oct 09, 2022 by Kevin

Q: Could this be used as a shut off for when drawing from kegs to the tap? If the ball floats, couldn't the flow be downward, ball stays up or moves around during pour and returns to top, but once the keg has run out, ball drops onto the bottom port to stop flow of beer from shooting into your glass soaking you and your floor? Don't ask me how I know.... :D

A: I don't think it would work for that application. It is designed to connect to the gas side of the keg so when you fill an empty keg, once liquid comes out of the gas side the ball floats to the top to shut off the flow. If you had it connected to the liquid side as soon as you tried to draw a beer, the ball would rise to the top preventing the beer from flowing out of the tap.


Feb 11, 2021 by Aaron Bandler

Q: does it leave any head space inside the keg, or does it completely fill it up?

A: It will fill the keg up completely.


Sep 24, 2019 by Mac

Q: Can this be used during a pressure transfer where you need back pressure and use a spunding valve?

A: This really handy device is great for filling kegs, keg to keg transfers or fermenter to keg transfers. Fantastic for use with Fermentasaurus or other pressurisable fermenters. Simply attach this device to the output gas post of your Keg then when the keg is full it will prevent further liquid exiting the gas post. This means you can literally set and forget and fill kegs automatically without the risk of kegs overflowing all over the floor.


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