Pin lock disconnect. GAS
CMB (Made in Germany) Pin lock disconnect fits onto your gas in keg port.
The gas disconnect has a grey base (the beer out disconnect has a black base)
They easily attach to the keg post and a twist locks the collar securely.
A plunger in the disconnect depresses a poppet valve built into the post allowing the flow of gas or liquid.
As the disconnect is removed a spring automatically closes the poppet valve preventing the loss of any pressure or liquid. It also prevents the ingress of any O2 protecting the contents from oxidation.