An overview of constant pressure water vacuum degassing unit is the use of advanced technology research and development to achieve international central heating and central air-conditioning system at constant pressure, swelling, water, vacuum degassing four in one of the new equipment. The device plays regulators in the system, automatic replenishment, expansion automatic discharge, removal of the system of free gas and dissolved gases and other effects. The system is always in the efficient, environmentally friendly, energy-saving state of motion. 2 equipment works constant pressure water device can be adjusted capacity utilization pressure tank, and can automatically adjust the user changes the water when the water was reduced or no water, you can not start the pump for a long time, to save energy. And towers, water tanks can save about 40% -60% of investment compared. The device is compact structure, and other traditional means reducing the footprint of the water savings compared to land resources. This device fully automatic operation, no special management, reliable work. While the water system: on the one hand there is a lot of gas, if not removed prone to air resistance, resulting in partial or poor circulation and Enthusiasm, as well as damage to equipment and piping throughout the system; on the other hand the water contains Oxygen makes heating (cooling) equipment, piping and steel radiators and other terminal equipment corrosion, perforation, leaking directly affect the security of the entire system. The unit of the degassing device that is based on Henry's law: dissolved in water in a certain temperature and a certain amount of pressure of gas, when the temperature increases or pressure drops, the gas dissolved in the water will reduce the principle; in the case where the temperature does not change by device creates a vacuum, the water is free and dissolved gases released, and then discharged through the exhaust valve system automatically. Unsaturated degassed water in a gas absorption system to seek a balance gas and water. This cycle, thereby removing all water and gas systems to ensure the stable and secure operation of the system. 3 Features an automatic constant pressure, automatic replenishment, automatic drain, automatic removal of free gas within the system, dissolved gases. 2, arbitrarily set operating parameters for any given pressure water confined spaces. 3, saving energy: the system automatically reads information only when necessary to run the boot device. 4, degassing efficiency and deoxygenation efficiency> 99% 5, can greatly shorten the time of heating or cooling the exhaust system after the initial injection, highly conducive to the initial commissioning of the system. 6, the gas removal system to prevent vapor lock, to ensure stable and reliable during normal system operation. 7. Elimination of pump cavitation, reduce system operating noise. 8, since the oxygen-depleted water, will reduce system aerobic corrosion and prolong equipment life. 9, since the gas is freed from the water, the heat exchanger is not attached to the gas bubbles on the surface, to improve the heating efficiency. 10, degasser working hours and cycles can be adjusted as needed. 11, a single applicable system capacity up to 150m3; be multiple parallel. 12, small footprint, easy to install, fully automatic operation, safe and reliable, easy maintenance. 4 Device feature set automatic constant pressure, swelling, water, vacuum degassing cancel expansion tank and one of the four large pressure tank, to simplify the system to extend the life of the equipment and piping to improve the efficiency of heat transfer equipment to eliminate noise and system piping air resistance phenomenon degassing single maximum volume of treated water system to 150m3 with a prepared, double vertical pump water feature can be used to control and general control inverter reliable mechanical performance, Chinese user interface