Relieves pressure while doing a closed transfer from one keg to another while also letting you read the pressure in the receiving keg.
Can also be used at the end of fermentation to use the yeast to carbonate your beer to the desired CO2 volumes.
End of the valve is spring-loaded and can be adjusted to control pressure.
Comes with a grey ball lock gas disconnect with MFL threading, but can be replaced with pin-lock or any other disconnect with MFL threading. Make sure to connect it to gas disconnect!