Limitations Of Globe Valve
Compared with the sealing performance of the globe valve, it can effectively avoid leakage, and the globe valve also has its own limitations:
First of all, the fluid resistance of the globe valve is large, and the force required for opening and closing is large, so the globe valve can not be done too much: in general, the nominal diameter of the low pressure globe valve is less than 250 mm, and the high pressure globe valve is not more than 150 mm.
The regulating performance of globe valve is relatively poor, so it is not suitable for medium with particles, high viscosity and easy coking.
In addition, the structure length of the globe valve is larger than that of the gate valve, at the same time, the fluid resistance is large, and the reliability of the seal is relatively weakened during long-term operation. Only from the positive and negative aspects of comprehensive understanding of globe valve, can accurately select the appropriate globe valve products.