Kegco barrel couplings feature a commercial construction that can withstand heavy use in demanding commercial environments such as pubs, bars and restaurants Specially designed with a lever handle that makes it more stable and reliable than standard barrel couplings NSF approved barrel coupling features a durable, nickel-plated forged brass body with a sanitary stainless steel probe This barrel is compatible with all American "D" system Sankey barrels and can be able to tap domestic beer kegs The Keg coupling design includes a 55 PSI pressure relief valve that allows overpressure gas to escape before it enters the barrel