ASCO solenoid valve system failure method

ASCO solenoid valve system failure method

The use of ASCO solenoid valves in the United States is generally not recommended for reverse use. Reverse use is recommended only in the case of high pressure differentials, high viscosity, easy coking, and media containing suspended particles. When used in reverse, it should be avoided to operate in a small opening condition for a long time, especially when testing. There are many kinds of valve bodies for regulating valves. The valve bodies of American ASCO solenoid valves are mainly straight through single seat, straight through double seat, angle, diaphragm, small flow, three-way, eccentric rotation, butterfly, sleeve, spherical, etc. .

In the specific selection, the following considerations can be made: The shape of the valve body of the pneumatic regulating valve is mainly considered according to factors such as the selected flow characteristics and the unbalanced force. Wear resistance. When the fluid medium is a suspension containing high concentration of abrasive particles, the internal material of the regulating valve should be hard and corrosion resistant. Because the medium is corrosive, try to choose a valve with a simple structure. The temperature and pressure of the medium, when the temperature and pressure of the medium are high and vary greatly, the valve and the material of the valve seat should be selected to be subjected to a small temperature and pressure change. When the temperature is ≥250 °C, the radiator should be added. Prevent flashing and cavitation, flashing and cavitation are only produced in liquid media. In the actual production process, flashing and cavitation will form vibration and noise, shortening

American ASCO Solenoid Valve

The service life of the valve, therefore, the valve should be prevented from flashing and cavitation when selecting the valve.

In the chemical control system with high degree of automation, the pneumatic regulating valve is used as the terminal execution device of the automatic regulating system, and receives the control signal to realize the adjustment of the chemical process. Its motion sensitivity is directly related to the quality of the adjustment system. According to the actual statistics on the site, about 70% of the faults come from the regulating valve. Therefore, in the routine maintenance, the factors affecting the safe operation of the regulating valve and the countermeasures are summarized.

The problem often occurs in the American ASCO solenoid valve is the jam, which often occurs in the initial stage of the new commissioning system and overhaul. Due to the slag, the rust, etc. in the pipeline, the clogging of the throttle and the guiding part makes the medium flow poorly, or adjusts. In the valve overhaul, the packing is too tight, causing the friction to increase, causing the small signal to not move and the large signal to overshoot.

Trouble-shooting: It can quickly open and close the auxiliary line or the American ASCO solenoid valve to let the dirt run away from the secondary line or the regulating valve. Another method is to clamp the valve stem with a pipe wrench. When the signal pressure is applied, the valve stem is rotated forward and backward to allow the spool to flash past the card. If not, increase the air supply pressure and increase the drive power repeatedly to move up and down several times to solve the problem. If it still does not work, it needs to be dismantled.

A class of hardware products often used in American ASCO solenoid valves. The quality of the installation of electric control valves determines the performance and service life of power tools to a certain extent. But what should you pay attention to when installing and using? In order to ensure the installation quality and installation safety during the installation of the electric control valve, the next step is to give you a few tips.

US ASCO solenoid valve installation notes:

*Article: Newly designed, installed control system.

Note: In order to ensure that the US ASCO solenoid valve works properly and the system is safe to operate, the new valve should first check that the nameplate mark on the valve matches the design requirements before installation.

Article 2: The following items should also be debugged. Basic error limit; full stroke deviation; hysteresis; dead zone; leakage

Note: When it is required to be strict.

Article 3: If it is in the original system

American ASCO Solenoid Valve

In addition to the above-mentioned items, the overhaul of the old valve and the joints of the old valve should be checked for leaks.

Article 4: In the field of ASCO solenoid valves in the United States, many of them are often caused not by the quality of the American ASCO solenoid valve itself, but by improper installation and use of the regulating valve, such as: improper installation environment, installation position and direction, or The pipeline is not cleaned, etc.

ASCO solenoid valve system failure method

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