The SHV4 needle valve is a high-performance globe valve widely used in EH oil control systems. It is mainly used to control the full open and full close of the oil circuit, as well as to achieve throttling function by adjusting the opening of the cone valve. It has excellent sealing performance, high pressure resistance, fast response, and compact structure, and is suitable for various industrial scenarios, including power, petroleum, chemical and other fields.
1. Product features
The SHV4 needle valve has the following significant features:
? Excellent material: It is usually made of corrosion-resistant materials such as stainless steel, which has good corrosion resistance and high pressure resistance.
Good sealing performance: Adopting a precision sealing structure, it can maintain no leakage even in high-pressure environments, ensuring the stability and safety of the system.
? Quick response: able to quickly cut off the oil circuit in emergency situations, protecting the system from damage.
Compact structure: small size, light weight, easy to install and maintain.
Strong applicability: Suitable for various working conditions and has a wide range of applicability.
2. Main functions
Oil circuit control: The needle valve SHV4 can achieve full opening and full closing of the oil circuit, controlling the start and stop of the actuator.
? Throttle function: By adjusting the opening of the cone valve, the oil circuit can be throttled to regulate flow and pressure.
High pressure oil treatment: capable of withstanding high-pressure oil, ensuring smooth transmission of high-pressure oil in the EH oil control system.
3. Application Fields
The SHV4 needle valve is mainly used in the following fields:
EH oil control system: In the EH oil system of the steam turbine, it is used to control the on/off and throttling of the oil circuit, ensuring the normal operation of the system.
Power industry: used for control systems of equipment such as generators and turbines.
Petroleum and chemical industry: used to regulate the flow rate of oil and gas transportation, ensuring production efficiency and safety.
Food and pharmaceutical industry: used to control the transportation and processing of liquid materials.
4. Working principle
The working principle of the SHV4 needle valve is similar to that of a globe valve, which controls the opening and closing of the valve disc by rotating the valve stem, thereby achieving the on/off of the oil circuit. In addition, by adjusting the opening of the cone valve, throttling function can also be achieved.
5. Maintenance and Precautions
Regular inspection: Regularly check the sealing performance of valves and the wear of mechanical components.
Cleaning and lubrication: Keep the valve clean and regularly lubricate the moving parts.
? Avoid overload: Ensure that the valve operates within the rated pressure and flow range.
Backup valve switching: It is recommended to equip backup valves and switch them regularly to ensure system reliability.