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flow controllers, valves and regulators for controlling and limiting flow and pressure of gases and liquids, and process control apparatus and manifolds, manual and air actuated, for controlling and limiting flow and pressure of gases and liquids

equipment and systems used in handling and administering of medical and dental gases; namely, gas regulators, valves, inspiratory units, oxygen tank carts, resuscitation devices, portable oxygen units consisting of oxygen tank, regulator, valve flowmeter, carrying case, and nasal cannula and orthodontic blowpipes, cylinder manifolds and related parts