Spring-tip Bottle Filler
Bottle filler with a spring-loaded valve in the tip. Use with 3/8" or 5/16" tubing. For ease of use, a bottling bucket with a 3/8" spigot is recommended, but it can also be attached via tubing to a regular or mini auto-siphon.
To use, insert the filler into a bottle and push down to depress the spring to open the valve. Fill bottle right to the top and remove filler – the displacement of the filler will leave a perfect amount of headspace.