A brass internal thread gate valve is a widely used valve type across various fields, primarily made of brass, offering excellent corrosion resistance and long service life. This valve achieves the opening and closing control of fluid in the pipeline system through an internal thread connection. It is suitable for nominal pressure PN ≤ 1.6MPa and temperature T ≤ 150℃ for water, oil, and gas media.
Structure of Brass Internal Thread Gate Valve
The main structure of a brass internal thread gate valve includes:
- Valve Body: The valve body is the main part of the entire valve, usually made of brass, with corrosion-resistant properties.
- Gate Plate: The gate plate is the opening and closing element of the valve, and its movement direction is perpendicular to the fluid direction. Based on different gate plates, it is divided into rigid gate plates and elastic gate plates.
- Valve Stem: The valve stem connects the gate plate with the handle, and the rotation of the handle enables the valve to open or close.
- Nut: Used to adjust the gap between the valve stem and the gate plate to ensure the sealing of the valve.
Features of Brass Internal Thread Gate Valve
The brass internal thread gate valve has the following notable features:
- Low Fluid Resistance: Due to the perpendicular direction of the gate plate’s opening and closing to the fluid flow, the fluid resistance is relatively low.
- Simple Structure: The shape and structure are relatively simple, making it easy to manufacture and maintain.
- Low Opening and Closing Torque: The torque required for opening and closing the valve is small, making it easy to operate.
- Less Erosion on Sealing Surface When Fully Open: When fully open, the sealing surface is less eroded by the working medium, prolonging its service life.
- Bi-directional Flow: It can be used in ring network pipelines where the medium flows in both directions, with no limitation on the flow direction.
Application Scenarios of Brass Internal Thread Gate Valve
Brass internal thread gate valves are widely used in the following fields:
- Industrial Field: Suitable for pipelines that transport various media, such as water, oil, and gas.
- Construction Field: Used in hot and cold water pipelines, water supply, and drainage pipelines.
- Home Field: Suitable for household gas pipelines, water supply pipelines, etc.
Installation Precautions for Brass Internal Thread Gate Valve
The following points should be noted when installing a brass internal thread gate valve:
- Check the Bore Diameter of the Valve and Pipeline: Ensure that the bore diameters of the valve and pipeline match.
- Pay Attention to the Direction of the Gate Plate: Ensure that the installation direction of the gate plate aligns with the flow direction of the medium.
- Conduct Sealing Performance Test: After installation, conduct a sealing performance test to ensure the valve is well-sealed.
- Pay Attention to the Operating Direction of the Valve: During installation, ensure that the operating direction of the valve is considered to prevent operational difficulties.
Maintenance of Brass Internal Thread Gate Valve
To ensure the normal use and extend the service life of the brass internal thread gate valve, the following maintenance should be carried out:
- Regularly Check the Sealing Performance: Regularly check the sealing performance of the valve, and replace sealing rings and other components if necessary.
- Regularly Clean the Inside of the Valve: Regularly clean the inside of the valve to prevent particles and rust from affecting the normal use of the valve.
- Corrosion Prevention: If the valve is idle for a long time, pay attention to corrosion prevention to extend its service life.
Application of Brass Internal Thread Gate Valve in Domestic Water
The brass internal thread gate valve also has a wide range of applications in domestic water systems. Here are some specific requirements and standards:
- Each water supply system should operate independently and should not be connected in series to avoid cross-contamination.
- The domestic water system should prevent pipeline backflow to avoid pollution.
- The domestic drinking water tank in the building should be independently set up, and its storage capacity should not exceed 48 hours of water consumption.
- The net distance between buried domestic water storage tanks and septic tanks, and sewage treatment structures should not be less than 10 meters.
- The domestic water storage tank in the building should adopt an independent structure and should not use the main structure of the building as the wall, bottom, and top cover of the water tank.
In these scenarios, the brass internal thread gate valve plays an important role, providing a guarantee for the safe and reliable operation of the domestic water system.