Constant pressure water vacuum degassing unit is adopting international advanced technology research and development of centralized heating and central air-conditioning system at constant pressure, swelling, water, vacuum degassing four in one of the new equipment. The device plays the regulator in the system, automatic replenishment, expansion automatic discharge, removal of the system of free gas and the dissolved gas and so on. The system is always in efficient, environmentally friendly, energy-saving state of motion. Equipment works constant pressure water device can take advantage of the ability to regulate the pressure tank and automatically adjusts the user changes the amount of 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 investment of about 40% -60% compared to. The compact device structure, and other traditional water supply system to reduce the footprint compared to save land resources. The 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 vapor lock, resulting in partial or poor circulation and Enthusiasm, and damage to equipment and piping throughout the system; on the other hand contained in the water Oxygen makes heating (cooling) equipment, piping and steel radiators and other terminal equipment corrosion, perforation, leakage directly affects the security of the entire system. The unit of the degassing device that, according to Henry's law: at a certain temperature and pressure were dissolved in water at a certain number of gas, when the temperature increases or pressure decreases, the gas dissolved in water will reduce the principle; in the case of the water temperature does not change by device creates a vacuum, the water free gas and dissolved gas is released, and then through the automatic discharge valve system. Degassed unsaturated water will absorb the gas system to seek gas-water balance. This cycle, so water all gas removal system to ensure the stable and secure operation of the system. Features 1, automatic constant pressure, automatic replenishment, automatic drain, automatic removal of the system of free gas, dissolved gas. 2, operating parameters can be set at any suitable place closed constant pressure water. 3, energy conservation: automatic reading system information, only when necessary to run the boot device. 4, degassing efficiency and deoxygenation efficiency of> 99% in May, can greatly shorten the exhaust time heating or cooling systems after the initial injection, highly conducive to the initial commissioning of the system. 6, the gas removal system to prevent vapor lock, ensure stable and reliable during normal system operation. 7, eliminate pump cavitation, reduce system operating noise. 8, since the oxygen-depleted water, will reduce system aerobic corrosion and prolong equipment life. 9, due to the removal in addition to water, gas, heat exchanger with gas bubbles on the surface does not improve the heating efficiency. 10, degasser working time and cycle can be adjusted as needed. 11, a single suitable system capacity up to 150m3; can be more than one parallel. 12, small footprint, easy installation, automatic operation, safe, reliable, easy maintenance. Device feature set automatic constant pressure, swelling, water, vacuum degassing four in one canceled expansion tank and large pressure tank, a simplified system to extend the life of the equipment and piping to improve the efficiency of heat transfer equipment to eliminate noise and piping system vapor lock phenomenon degassing single water treatment system to maximum volume 150m3 with a prepared, double vertical pump water feature can be used reliable frequency control and general mechanical performance control, Chinese user interface performance parameters to adapt the system pressure: 0.1-2.0 Mpa water pressure: ≥0.1Mpa ambient temperature: + 5 ℃ ~ + 40 ℃ Power: 380V / 50Hz Installation place: Indoor