Gas outlets with only one rubber sealing component. For positive pressure gas services, the outlet shall be equipped with a primary & secondary check valve & the secondary check valve shall be rated at minimum 200 psi in the event the primary check valve is removed for maintenance. The outlet assembly should have separate color coding for each service & will accept only corresponding gas specific adapters.All outlets shall be cleaned & de-greased for medical gas service, factory assembled & tested. The medical gas outlets should be of quick connecting & wall mounted modular type.