Ammonia with automatic shut off valve
Alternative name: Liquid ammonia automatic shut off valve Automatic ammonia cut off valve
Model: YL-AOX-M/941-electric QDQ641F-40C/P-pneumatic
Automatic shut off valve Overview:
The automatic shut-off valve for ammonia is a remote automatic control valve, which is composed of electric actuator or pneumatic actuator and fire proof valve. Through the interactive application of power supply and gas source, the opening and closing action of the shut-off valve is controlled. It is a safety device for the desulfurization and denitrification ammonia station of the power plant, the chemical and refrigeration liquid ammonia storage tank, and the fire prevention and leakage prevention of combustible gas/liquid or irritant medium. Interlock with electric box control cabinet, fire protection system, combustible gas detection alarm, SIS safety instrument system/DCS/ICS control center (plant management information system/MIS system) to realize remote automatic control of enterprise production.
Pneumatic ammonia automatic cut off valve
Pneumatic automatic shut-off valve for ammonia is a valve driven by actuator driven by compressed air source pressure. It is equipped with travel limit switch, explosion-proof solenoid valve, air filter pressure reducing valve and manual device. The actuator is equipped with a stop valve for the straight stroke cylinder, an O-ring and a V-shaped ball valve for the angular stroke cylinder, a single acting cylinder (spring return) for the normally closed type, and a double acting cylinder for the normally open type. The valve position of the air to open control valve is closed when the air source/power supply fails, and the valve position of the air to close control valve remains in place when the air source/power supply fails.
Electric type ammonia with automatic valve
The electric ammonia automatic switching valve adopts explosion-proof electric actuator with explosion-proof grade (Exd Ⅱ BT4, Exd Ⅱ CT5), with AC 220V, 380V or DC 24V as the driving power supply, controls the switch action of the straight travel (up and down movement)/angular travel actuator (left and right movement). The control line meets the single-phase or three-phase power supply standards. The line layout is compact and reasonable, and the wiring terminals can effectively meet the requirements of various additional functions.
“ YongLong” The automatic shut-off valve for ammonia has various types of structures and is suitable for different working conditions. Therefore, the type of shut-off valve should be reasonably selected according to the requirements of the process production process. In the production process, the control system has different requirements for valve configuration, so the pneumatic shut-off valve must be equipped with various accessories (electronic components) to meet the needs of the production process:
1. The valve position switch indicates that the valve is open or closed.
2. The explosion-proof solenoid valve controls the switching of air source to realize the opening and closing action
3. The air filter pressure reducing valve is used to purify the water in the air source, intercept impurities, and regulate the pressure of the air source.
4. When the controller of the control system fails, the hand wheel mechanism can be switched to the manual mode to operate the valve.
“ shylfmc” The main products of Shanghai Yonglong Valve Factory are: ammonia stop valve, liquid ammonia stop valve, ammonia stop valve, low temperature stop valve, special ball valve for liquid ammonia, special ball valve for ammonia, stainless steel ball valve, low temperature ball valve, electric ball valve, pneumatic ball valve, low temperature emergency stop valve, electric emergency stop valve, gas emergency stop valve, pneumatic emergency stop valve, hydraulic emergency stop valve, flame arrester, Fire retardant vent cap, automatic exhaust valve, air trap, pull off valve, flow limiting valve, fuse valve and other products are produced according to national standards such as Chinese GB, HG, JB, American API, ANSI, German DIN and Japanese JIS& ldquo; Yonglong Valve” He has always been committed to scientific and technological innovation, striving to promote the technological progress of ammonia valves, and providing reliable and effective solutions for the control methods applicable to different working conditions and different needs.
