Keg Coupler Thomas Valve – one way valve allows CO2 to enter your keg while reducing the chances of beer getting in to your gas lines where it can’t easily be cleaned out. Fits most Micromatic style couplers. For best results, use with a Gas Nipple – the Gas Nipple engages with the Thomas Valve to hold it in place and prevents leaks.

No beer washer is needed when using a Thomas Valve with a Gas Nipple.