Medical gas equipment including medical Oxygen system, Air plants, medical vacuum plants, AGSS plants, manifolds and pipeline components are most important and vital system for Medical centers. Manager of Hospital should be more concern about correct choose, installation, commissioning, operation and maintenance in order to not only avoid financial loss but guarantee non stop operation of equipment and linger life. to reach to this goal Hospital should refer to international and national guideline and standard, beside make sure that supplier after sales service is reliable.