Product display

　　Explosion-proof valve control box product introduction
　　25 dx series explosion-proof valve control box (hereinafter referred to as control box) and all kinds of pneumatic actuators form a complete set of automatic control device, is widely used in the field of petroleum, chemical industry, textile, etc, the series of control box by national instruments explosion protection safety supervision and inspection to identify qualified, and given a explosion-proof certificate, flameproof explosion-proof control box for qualified number for GYB00239 YB00428, explosion-proof marks for Exd Ⅱ BT4, Ann type explosion-proof control box for qualified number for GYB00240 GYB00427, explosion-proof marks for Exia Ⅱ CT5, flameproof and the Ann model respectively suitable for Ⅱ class B T4 and T5 Ⅱ class C level group explosive environment. The series of control box is according to GB3836.1-2000 "explosive gas environment with the general requirements for electrical equipment part 1" GB3836.2-2000 "explosive gas environment with electrical equipment part 2 flameproof" d ", "and GB3836.4-2000" explosive gas environment with electrical equipment part 4 "I" intrinsically safe "regulations and requirements of the relevant standards of design and manufacturing.
　　Explosion-proof valve control box to normal working environment conditions
　　Altitude does not exceed 2000 m;
　　Ambient temperature is not higher than + 60 ℃, no less than 20 ℃;
　　When environment temperature + 25 ℃, relative humidity is not more than 95%;
　　Environmental pollution levels: level 3;
　　Install categories: Ⅱ, Ⅲ;

　　Outdoor use explosion-proof waterproof products still should satisfy used in the following conditions:
　　A rainfall intensity is not more than 50 mm / 10 min
　　B the intensity of solar radiation is not greater than 1.4 Cal/cm2. Min
　　C have frost, dew, ice, snow and sand and dust environment

　　Explosion-proof valve control box structure features:
　　Control box integrating electromagnetic directional valve and the connection box, power cord, explosion-proof signal return line of the cylinder valve and valve position signal output lines are connected to the terminals in the cabinet. The pilot electromagnetic control, small volume, and consume less power. The Ann model is only 0.45 W, belong to the domestic advanced level. Pilot valve plug seal USES spring compensation structure, the valve stem and the piston part adopts special structure of sealing ring, low starting pressure, long service life. Electromagnetic coil coating technology used to epoxy potting, has a good waterproof, moistureproof, wet and heat resistance. Solenoid valve has good capability of air lock, therefore in the complex environment, such as vibration and reliable use. This series control cabinet are equipped with hand control device and has the self-locking mechanism, failure to manual operation and the circuit can bring convenience to daily control, especially for single control circuits.
　　This series control cabinet used pilot valve specifications are the same, has the good compatibility. The series of the Ann model control box can be associated with form a complete set of equipment LB973 or LF773 zener safety barrier form intrinsically safe explosion prevention system, and the national instruments explosion-proof safety supervision and inspection to obtain evidence, have been in China for many years experience of successful use.