Self operated regulating valve is a valve used to control fluid pressure, flow rate, and temperature. It can automatically adjust the outlet pressure based on changes in inlet pressure to maintain a constant pressure value. This type of valve is widely used in industrial fields, such as chemical, petroleum, power, etc.
The automatic constant pressure, stable back pressure, flow rate, and steam pressure reducing valve for nitrogen pipelines are a special type of self operated regulating valve mainly used in nitrogen pipeline systems. It can automatically adjust the pressure and flow rate of nitrogen to maintain a stable back pressure value. This type of valve usually consists of components such as valve body, valve cover, valve seat, valve disc, spring, etc.
Model size comparison table:
|Model | nominal diameter (DN) | connection method | working pressure (MPa) | applicable medium|
|— | ——– | ——– | ——– | ——–|
|ZL-1 | 15-50 | flange connection | 0.6-1.6 | nitrogen gas|
|ZL-2 | 50-80 | flange connection | 1.0-2.5 | nitrogen gas|
|ZL-3 | 80-150 | flange connection | 1.6-4.0 | nitrogen gas|
|ZL-4 | 150-200 | flange connection | 2.5-6.4 | nitrogen gas|
|ZL-5 | 200-300 | flange connection | 4.0-10.0 | nitrogen gas|
The above model dimensions are for reference only, and the specific selection should be determined based on actual working conditions and requirements.
