Program control valve introduction

The program control valve is a shut-off valve driven by pneumatic, hydraulic and other means. The valve is connected with DCS distributed control system or PLC to realize remote control of computer program. It is widely used in PSA gas separation industries such as methanol cracking hydrogen production, alcohol drying, vinyl chloride concentration and recovery, polysilicon tail gas recovery, nitrogen production, oxygen production, and carbon dioxide recovery. The program control valve is the key equipment of PSA device, and an important part for successful completion of PSA processes and reliable operation of the system. The main processes of PSA include adsorption, pressure equalizing, forward release, reverse release, flushing, etc. Each process is completed by opening and closing the program control valve at a certain time. Program control valve is an important part of PSA device to complete its process, and also a key equipment for the device to achieve normal operation and reliable work.

（1） Structure of program control valve

The sealing ring in the cylinder adopts oil resistant rubber O-ring, which has good sealing performance and is easy to replace and maintain; The valve has bi-directional pressure resistance and high velocity air flow erosion resistance, high hardness and mechanical strength, and frequently operates periodically without leakage; Fast opening and closing speed of valves (opening and closing time under DN150 ≤ 2s, above DN150 ≤ 3s); It can realize remote control, centralized control and automatic control; The pneumatic (hydraulic) cylinders with different inner diameters and strokes can be selected according to different service conditions, and the application range is wide.

（2） The quality of the program control valve provided by Chengdu Kete Ruixing Technology Co., Ltd. is higher than that of similar products, and its characteristics are as follows:

1. The program control valve can prevent leakage and ensure safe production of the device.

2. The program control valve can eliminate internal leakage and ensure the product gas yield and product quality of the device.

3. The valve core structure adopts a special wrapped anti scour design, which greatly improves the service life of the sealing material; The seal life can reach 1 million times.

4. The stuffing box adopts a radial and axial self compensating and self tightening sealing structure. The valve rod adopts a nickel chromium alloy electroplating process to reduce the friction coefficient and improve the high and reliable external sealing performance.

5. The streamlined design not only has good two-way fluidity, but also makes the device look more beautiful.

6. The balance cylinder program control valve is adopted and can be operated by compressed air. The power system has low investment, low operation cost, safety and reliability, no environmental pollution, and little impact of environmental temperature change.

7. It has the performance of on-site indication of valve position status and remote signal transmission, and meets the explosion-proof requirements of Zone II.

8. The compressed air throttling device can effectively control the opening speed of the valve** The program control valve meets the process requirements of slow opening and fast closing.

9. The closing speed is fast, and the closing time is~2 seconds depending on the valve diameter.

10. Online maintenance can be carried out (without removing the valve body), which is very convenient.

11. Pipe muffler and solenoid valve muffler are set up. Sound attenuation materials are set outside the process pipe, and the noise of the device is lower than 50 decibels.

12. Our company produces pneumatic normal temperature program control valve, pneumatic high temperature program control valve, strong acid resistant environment program control valve and hydraulic electric valve.

Pneumatic normal temperature program control valve

Pneumatic high-temperature program control valve