Article List
- Applications for globe valves: Part 611. API 602 forged steel globe valve: This kind of globe valve is designed according to the American Petroleum Institute standard API 602, the valve body and bonnet are forged of carbon steel or stainless steel.
- Applications for globe valves: Part 59. Upper thread stem globe valve: The stem of this type of globe valve is not in direct contact with the working medium. According to the shell material, sealing pair material, packing material, valve stem material, suitable for different working conditions.
- Applications for globe valves: Part 47. Globe valve for oxygen pipeline: The valve is designed in strict accordance with the requirements of oxygen pipeline. The stuffing box part is strictly sealed, and external dirt must not enter the stuffing box.
- Applications for globe valves: Part 35. High temperature and high pressure power station globe valve: the structural feature of the valve body and the valve cover is that the connection between the valve body and the valve cover adopts pressure self-tightening sealing type or clamping type, the connection form between the valve body and the pipeline is butt welding connection, the valve body material is mostly made of chromium-molybdenum steel or chromium-molybdenum vanadium steel, and the sealing surface is mostly overcast cemented carbide.
- Applications for globe valves: Part 23. Angle globe valve: The biggest advantage of the angle globe valve is that the valve can be installed at the corner of the pipeline system, which saves 90O elbow and is easy to operate. Therefore, these valves are most suitable for use in synthetic ammonia production systems and refrigeration systems in fertilizer plants.
- Applications for globe valves: Part 1Globe valves are widely used in many occasions. However, according to the different structural types of the globe valve, the applicable occasions are also different.
- Sealing principle of globe valve: Part 44. Radial seal: Radial seal refers to the sealing of the plunger type globe valve, and its sealing principle is that in the plunger valve, its disc and valve seat are designed according to the principle of the plunger.
- Sealing principle of globe valve: Part 33. Spherical seal: Making the valve disc spherical and the valve seat conical, the ball of the disc can rotate freely in the hole of the stem. Therefore, the disc can be adjusted by a certain range of rotation on the valve seat. Since the contact between the two sealing surfaces is almost a line, that is - the line seal, the sealing stress is high and it is easy to seal.
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- Sealing principle of globe valve: Part 22. Cone seal: Making the sealing surface conical to narrow the contact surface. This kind of seal under the action of a certain sealing force, its sealing specific pressure is greatly increased, and it is easy to achieve the seal. Under the premise of ensuring sealing, the sealing force applied is smaller than that of flat seals. Since the narrow sealing surface is not easy for the disc to fall correctly on the valve seat, the disc must be guided in order to achieve the best sealing performance. After the disc is guided, it can achieve better sealing performance.