... standard. Each medical gas outlet we supply has passed air tightness test. Designed with valve for the convenience of maintenance ... supply:1, Medical Gas Source Equipments for Oxygen, Compressed Air, Vacuum, Nitrous Oxide, etc., such as:Medical PSA Oxygen ... (Automatic / Manual for O2, N2O, CO2, Air, etc.;)Medical Compressed Air SystemMedical Vacuum Pumps System2, Medical Gas Control Equipments, ...