Много хора често се оказват объркани относно разграничението между сферичен вентил и шибър. За да се хвърли светлина върху този въпрос, Farpro Valve will help you understand the differences between these two types of valves by comparing them across various aspects.
Difference in Sealing Surface Structure:
The valve plate of a globe valve, also known as the valve flap, is parallel to the fluid passage. За разлика, the valve plate of a gate valve, commonly referred to as the gate, is perpendicular to the fluid direction.
Difference in Working Principle:
When operating a globe valve, turning the handwheel causes the stem to rise or fall, resulting in the movement of the handwheel as well. От друга страна, the gate valve operates differently, where turning the handwheel causes the stem to move up or down while the position of the handwheel remains unchanged.
освен това, gate valves only have two states: fully open or fully closed. They primarily function as shut-off valves and have a longer stroke during the opening and closing process. Глобусни вентили, however, have a smaller stroke range, allowing the valve plate to be positioned at various points along its movement to regulate flow.
Difference in Installation:
Globe valves are designed as one-way valves, and the valve body is marked with a flow direction arrow. During installation, it is crucial to follow the indicated direction of fluid flow as per the arrow. За разлика, gate valves can accommodate fluid flow in both directions, making them more versatile in terms of installation.
Difference in Fluid Resistance:
Gate valves exhibit low fluid flow resistance, with the flow resistance coefficient typically ranging from 0.08 to 0.12. They require minimal force to open or close, and the medium can flow in either direction. От друга страна, globe valves tend to have higher fluid resistance, with resistance coefficients usually around 3.5 to 4.5.
By understanding the differences between stop valves (сферични вентили) и шибърни кранове, you can make informed decisions when selecting the appropriate valve for your specific applications. Whether it’s optimizing flow regulation or ensuring efficient shut-off, Клапан Farpro offers a wide range of high-quality valves to meet your needs.