Ball Lock Disconnect Spund Valve G2This is a low profile opton only 4. 5cm in height. This spunding valve fits to standard gas posts on your fermenter (red or yellow or stainless steel carbonation caps). It fits on some keg gas posts but the rubber around reconditioned kegs makes it hard to connect properly (best go for the other spunding valves we sell if you want it for a recon corny keg) This easy to use and compact Spunding valve is handy for keg transfers or pressurized