1-General Standard Name
Stainless steel integrated precision back pressure stabilizing valve (sampling system dedicated pressure reducing & stabilizing valve). Alternative names: Process analysis back pressure valve, steam-water sampling pressure stabilizing valve, high-purity gas back pressure valve.
2-Structural Features
Material: Main body 316L stainless steel, diaphragm Hastelloy / PTFE, strong corrosion resistance, fully compliant with Russian GOST petrochemical pressure bearing standard.
Structure: Integrated modular design with regulating handwheel, precision pressure gauge, bypass sampling port and ferrule interface, plug-and-play for analysis pipeline.
Working principle: Precision diaphragm back pressure structure automatically maintains constant outlet pressure, eliminates upstream fluctuation and ensures stable flow and pressure for rear analytical instruments.
3-Application
1.Thermal Power / CHP / Captive Power Plants (Core of Russia’s Energy Industry)
Each centralized steam-water sampling and analysis system is standardly equipped with 1~2 constant pressure valves, used for pressure stabilization in feedwater, boiler water, and steam sampling circuits to ensure the stable operation of pH, conductivity, and dissolved oxygen analyzers. Hundreds of refinery captive power plants and regional CHP plants across Russia generate enormous annual demand for spare parts and new construction projects.
2.Petroleum Refining & Natural Gas Processing Plants (Core Application Field)
Online chromatographic analysis systems and oil & gas composition monitoring systems in refinery hydrotreating units, reforming units, and catalytic cracking units require a constant pressure valve for each analysis pipeline. A single large-scale refining unit may use dozens to hundreds of such valves.
National-level projects such as the Amur Gas Processing Plant and Yamal LNG in Russia have strong import demand for this type of precision pressure stabilizing valve. After the withdrawal of European and American brands, Chinese-made 316 stainless steel constant pressure valves have become the mainstream replacement.
3. Chemical & Coal Chemical Industry
Used for online monitoring of high-purity process gases and corrosive media in synthetic ammonia, methanol, and fine chemical plants, stabilizing the medium pressure entering analytical instruments and preventing pressure fluctuations from causing data distortion. These valves are standard components in chemical automation systems.
4. Instrumentation, Laboratory & Environmental Monitoring Industry
This type of constant pressure valve is widely used in Russia’s industrial online environmental monitoring systems, emission flue gas analysis systems, and laboratory high-pressure gas circuits. As a precision instrumentation accessory, qualified local mass production is almost nonexistent, with import dependence exceeding 85%.
