EDRV electric dynamic pressure balance valve Shanghai Valve Co., Ltd. Tianjin Shield

EDRV series of electric valve Product Overview: electric dynamic balancing of professional producers, the Shanghai Valve Co., Ltd. Tianjin Shield developed the production of balancing / building control valves reliable quality, reasonable prices, improve service. Dynamic balance of electric control valve for a variety of light and heavy industrial and building pipelines. Valves central air-control valve is widely used: chemical, petrochemical, oil, paper, mining, electricity, gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronics industry, urban construction and other fields. Electric control valve characteristic: Principles balancing / control valve is a valve body anti-regulation, when the entrance to the increased pressure is automatically reduced diameter, reducing traffic changes, and vice versa. If the reverse, this regulation system would be ineffective. And the regulating valve, is directional, reverse pressure flow can even be reduced or even closed. Since the installation of balancing valves in order to better heating, there is no anti-loaded questions. If it is reversed, that is, human error, of course, will be corrected. Valves belong to the scope of the control valve, it works by changing the valve and valve seat gap (ie opening), changing the flow resistance of the fluid flow through the valve, to regulate the flow of purpose. EDRV series electric control valve works: Shanghai, Tianjin Shield valve manufacturing dynamic electric balance is different from the traditional electric control valve of a new generation of products, the integration of dynamic equilibrium with the electric control valve products. It works as shown below, the system load fluctuations of variable flow systems, when the system pressure changes, the dynamic balance of electric control valve second end of the pressure difference (P1-P3) also change. EDRV series of electric valve Installation Notes: (1) adjusting the valves are field instruments, requiring ambient temperature should be in the range of -25 ~ 60 ℃, relative humidity ≤95%. If you are installing in the open air or high temperature applications, should take water, cooling measures. There are places in the source away from the vibration source or increase anti-vibration measures. (2) The valve should normally be mounted vertically, can be tilted under special circumstances, should increase support for valve protection, such as the tilt angle is large or the valve itself too much weight. (3) Install the valve of the pipe is generally not too high off the ground or floor, try to set up the platform when the tube height greater than 2m, in order to facilitate the handwheel and ease of maintenance. (4) The control valve installation response pipeline cleaning, to exclude dirt and weld slag. After installation, to ensure that no impurities remain in the valve body, the valve should be cleaned again, that should be introduced into the medium so that all valves open, to avoid impurities stuck. After using the hand wheel, it should be restored to its original neutral position. (5) In order to make the valve in the event of failure or maintenance make the production process can be continued, the control valve bypass pipe should be added. Special attention should also adjust the installation position of the valve meets the requirements of the process. (6) of the electrical part of the electric control valve should be installed in accordance with the construction requirements for electrical equipment. If so flameproof products should be "explosion hazard electrical equipment installation specification" requirements for installation. Such as live wires using SBH type or six other core or eight-core and an outer diameter of about Φ11.3 mm rubber cable installation. In the use and maintenance in explosive spaces non-energized maintenance openings and pry surface explosion hit. While dismantling the explosion not to be injured face, we want to restore to its original state after maintenance explosion-proof requirements.