The valve is pressure tested prior to installation to ensure tightness and safety of the ball valve seal.
The strength test is 1.5 times the nominal pressure.
The seal test is 1.1 times the nominal pressure.
Buried welded ball valve installation instructions 1. Hoisting should be the correct way to hoist the valve, in order to protect the stem, do not tie the chain to the hand wheel, gear box or actuator. The protective caps at both ends of the valve sleeve must not be removed before welding.
2.Welding should be carried out by welding rods corresponding to the valves and pipes. Firstly, remove the cover on both ends of the ball valve to remove dirt and flow hole impurities from the welding bevel; Open the ball in a fully open state to avoid splashing during welding. Welding slag causes unnecessary damage to the sealing ball, and at the same time ensures that the temperature of the seal does not exceed 140° C. If necessary, appropriate cooling measures can be taken.
3. Buried buried ball valve Wells can be coated with anti-corrosion coating on the exterior of the valve before laying. After adjusting the valve well to a suitable height, the ball valve will be buried underground. In the masonry, the small valve can be operated well.
Third, the buried welded ball valve using the operating instructions to extend the service life of the valve, due to the reasonable operation of the valve; the valve is often operated to prevent impurities in the valve seat or valve ball surface, but also to avoid the valve seat inlay local over Wear.
If the valve is opened too fast, the valve will have a large twisting load and the stem will be damaged. If the switch is too slow, the surface of the valve seat will wear out due to the medium scouring for a long time. Therefore, the operating time should be kept within a constant rotating range.
When the ball valve is put into operation, the ball should be fully open or fully closed, and it must not be in half-open or semi-closed state to avoid damage to the valve seat.
Buried welded ball valve daily storage maintenance valve should be stored in a dry and ventilated room.
Where there is no need to paint, anti-rust oil should be applied. Lubricant should be injected into the rotation of the valve and the valve chamber should be kept clean.
Conclusion: The good technical characteristics of the buried welded ball valve make the entire gas pipeline to be integrated and welded all together to enhance the overall stress resistance and geological disaster resistance of the pipeline containing valves (such as the ability of geological collapse). Avoid the possibility of leaks. Valve reliability increases lifespan, installation and maintenance are also very convenient.
The strength test is 1.5 times the nominal pressure.
The seal test is 1.1 times the nominal pressure.
Buried welded ball valve installation instructions 1. Hoisting should be the correct way to hoist the valve, in order to protect the stem, do not tie the chain to the hand wheel, gear box or actuator. The protective caps at both ends of the valve sleeve must not be removed before welding.
2.Welding should be carried out by welding rods corresponding to the valves and pipes. Firstly, remove the cover on both ends of the ball valve to remove dirt and flow hole impurities from the welding bevel; Open the ball in a fully open state to avoid splashing during welding. Welding slag causes unnecessary damage to the sealing ball, and at the same time ensures that the temperature of the seal does not exceed 140° C. If necessary, appropriate cooling measures can be taken.
3. Buried buried ball valve Wells can be coated with anti-corrosion coating on the exterior of the valve before laying. After adjusting the valve well to a suitable height, the ball valve will be buried underground. In the masonry, the small valve can be operated well.
Third, the buried welded ball valve using the operating instructions to extend the service life of the valve, due to the reasonable operation of the valve; the valve is often operated to prevent impurities in the valve seat or valve ball surface, but also to avoid the valve seat inlay local over Wear.
If the valve is opened too fast, the valve will have a large twisting load and the stem will be damaged. If the switch is too slow, the surface of the valve seat will wear out due to the medium scouring for a long time. Therefore, the operating time should be kept within a constant rotating range.
When the ball valve is put into operation, the ball should be fully open or fully closed, and it must not be in half-open or semi-closed state to avoid damage to the valve seat.
Buried welded ball valve daily storage maintenance valve should be stored in a dry and ventilated room.
Where there is no need to paint, anti-rust oil should be applied. Lubricant should be injected into the rotation of the valve and the valve chamber should be kept clean.
Conclusion: The good technical characteristics of the buried welded ball valve make the entire gas pipeline to be integrated and welded all together to enhance the overall stress resistance and geological disaster resistance of the pipeline containing valves (such as the ability of geological collapse). Avoid the possibility of leaks. Valve reliability increases lifespan, installation and maintenance are also very convenient.
ES200 automatic door,ES200 automatic sliding door,ES200 auto-door
Caesar door control co.,ltd , https://www.caesar-door.com