Self-operated low-pressure regulating valves are primarily used for controlling slight positive pressure and nitrogen supplementation in storage tanks, reactors, and sealed containers. They effectively prevent air ingress, ensuring system safety, explosion protection, and oxidation prevention.
Our control valves are engineered with optimized flow paths and control trims to deliver accurate, repeatable control across a wide operating range.
Specialized designs are available for high pressure, high temperature, corrosive, abrasive, and high differential pressure applications.
We offer a wide selection of valve body and trim materials, carefully selected to match process media and service conditions.operation.
The self-operated low-pressure regulating valve (nitrogen supply valve) is a valve that automatically regulates pressure without requiring external power or gas sources, relying solely on the pressure of the controlled medium. It is primarily used for micro-positive pressure control and nitrogen supplementation in storage tanks, reactors, and sealed containers.
This valve automatically opens to supply nitrogen when the tank pressure falls below the set value and closes automatically when the pressure is restored, effectively preventing air ingress and ensuring system safety, explosion protection, and oxidation prevention.
Structural Features
1. Self-operated structure
No power supply, gas source, or external control system required, ensuring reliable operation.
2. High-sensitivity micro-pressure control
Suitable for extremely low-pressure ranges with high adjustment accuracy.
3. Spring-set pressure
Opening pressure can be adjusted according to operating conditions.
4. Compact design
Small size, easy installation and maintenance.
Core Advantages
1. Safe and reliable
Prevents air backflow, reducing explosion and oxidation risks.
2. No external energy required
Energy-saving and environmentally friendly, simplifying the system structure.
3. Stable regulation
Smooth micro-pressure control and sensitive response.
4. Wide range of applications
Suitable for various storage tanks and sealed container applications.
Typical Application Areas
• Nitrogen blanketing systems for petroleum and chemical storage tanks
• Fine chemical and pharmaceutical reactors
• Food and beverage storage containers
• Flammable and explosive media storage systems
• Environmental protection and gas protection systems
High adjustment accuracy and stable control
Suitable for high temperature, high pressure, and harsh operating conditions
Selected materials and high-strength structural design
Reliable sealing and low leakage rate
Easy integration with automated control systems
Complies with multiple international certification standards
Your satisfaction is our goal. Phileda will win the praise of more and more customers with its excellent product quality and comprehensive service system. The Phileda team is ready to welcome you with vibrant energy and enthusiasm.
The valves have shown excellent reliability in demanding operating conditions. Product quality is consistent, delivery is always on time, and technical support is professional and responsive.
