Manufacturer of medical gas and respiratory equipment. The medical gas equipment includes medical gas system construction products, regulation devices, oxygen and specialty gas cylinders, pulmonary monitors and portable suction equipment. The respiratory therapy equipment includes respiratory care/anesthesia products and home respiratory care products. Products are sold to the medical and home health care industries. The bulk of revenue is derived from activity in the medical industry. Stock symbol: AHPI. Products include medical vacuum pumps, high pressure cylinder manifolds, couplers for respiratory and suction equipment, pulmonary monitors, oxygen and air flowmeters, Expiration flowmeters, oxygen delivery equipment, Oxygen therapy regulators, life support systems, suction regulators, Disposable suction collection systems, Polycarbonate and glass suction bottles, respirators/ventilators, humidifiers, Microprocessor-controlled humidifiers, adapters for respiratory and suction equipment, medical air compressors, fittings for respiratory and suction equipment, medical gas alarm systems, cO2 absorbents, Pre-manufactured headwalls, medical gas control valves and valve boxes.