John Guest PM1204E bulkhead connectors accommodate 4mm O.D. soft metal or plastic tubing for water & drink dispensing applications. It uses push-fit technology, so it is easier to install or disconnect. It is safe to use around water and other consumable liquids, while also being useful for air or inert gases. Made from black acetal copolymer. Has a 16 bar pressure rating for potable liquids and air applications up to 20 C (68 F) and a 10 bar rating for temperatures up to 65 C (149 F). Sold in a set of 10
John Guest 4mm Push-Fit Bulkhead Connector