When a tank is filled with liquid materials that are susceptible to deterioration or corrosion from exposure to atmosphere or moisture, it is necessary to apply a nitrogen sealing system to protect the materials from direct contact with the atmosphere. It is necessary to maintain a low internal pressure of nitrogen in the tank in order to minimize tank construction costs and losses arising from volatile diffusion and evaporative gas dispersion. To address this challenge, the micro-pressure control and sealing of a nitrogen sealing system is very demanding; it also requires high sensitivity of both the nitrogen sealing valve and pressure relief valve in order to maintain a constant micro-pressure of nitrogen in the tank during pumping in and out of materials. RUNFLOW has extensive experience in the selection and application of nitrogen sealing systems.
Function of the nitrogen sealing Valve >>>
1. Prevents evaporation and leakage of stored liquid products into the atmosphere;
2. Prevents the entry of moist air and other pollutants into the storage tank;
3. Ensure compliance with atmospheric regulations;
4. Reduces seal gas and product losses due to evaporation;
5. Provides comprehensive protection for people, products, storage tanks and the environment.
Characteristics of the nitrogen sealing Valve >>>
1. Micro-pressure adjustment: 0.15-15KPa;
2. Zero leakage: Saves nitrogen consumption;
3. High precision: The precision can reach a control pressure as low as 0.2 KPa;
4. Safety overload protection: Effectively unloads overload pressure under abnormal conditions, preventing valve damage;
5. Stainless steel actuator: This option enhances the valve's appearance, prevents rust, and improves its stability and longevity;
6. Modular design: Versatile and easy to replace parts;
7. Lever drive: Suitable for micro-pressure control;
8. Micro-negative pressure operation: The pressure relief valve can be directly connected to VOCs.
Applicable working conditions >>>
RJ439/RJ219/RJ90H：Suitable for storage tanks of ≤ 100 m3
RJ219： No dead angle design, ideal for clean working conditions
RJ592：Suitable for storage tanks of ≥ 100 m3
RJ5000：Pressure relief valve designed to withstand slight negative pressure, directly connected to VOCs
Schematic diagram of typical nitrogen sealing system >>>
It is recommended that the pressure extraction method for the micro-pressure nitrogen sealing valve be from the top of the tank to ensure pressure stability.
Typical valves and settings >>>
