Globe valve and gate valve in appearance have some similarities, while both have to do in the pipeline to cut off the function, so often people wonder, what is the difference between the globe valve and gate valve?
1. Globe valve and gate valve working principle difference
Globe valve in the opening and closing, is rising stem type, turn the hand wheel, the handwheel will be followed by the valve stem with the rotation and lifting movement; while the gate valve is to turn the handwheel, so that the valve stem to do the lifting movement, the handwheel itself is not the same position. Gate valve only fully open or fully closed two states, the gate opening and closing stroke is very large, opening and closing time is long, the valve plate of the globe valve movement stroke is much smaller, and the valve plate of the globe valve can be stopped at a certain place in the movement, to do the flow regulation, while the gate valve is only to do the use of truncation, there is no other function.
2. Globe valve and gate valve performance differences
Globe valve can be used to do both cut-off, can also be used to do flow regulation. Globe valve fluid resistance is relatively large, opening and closing more laborious, but because the valve plate from the sealing surface of the short distance, so the opening and closing stroke is short. Gate valve can only be fully open and fully closed, it is fully open, the valve channel in the medium flow resistance is almost 0, so the gate valve opening and closing will be very labor-saving, but the gate from the sealing surface distance, opening and closing time is long.
3. Globe valve and gate valve installation flow direction difference
Gate valve flow in both directions have the same effect, the installation of no import and export direction requirements, the media can be two-way flow.
Globe valve needs to be installed in strict accordance with the direction of the valve body arrow mark.
4. Globe valve and gate valve structure difference
The structure of the gate valve will be more complex than the globe valve. From the appearance, the same diameter, gate valve is higher than the globe valve, globe valve is longer than the gate valve. In addition, the gate valve also has a distinction between open stem and concealed stem, the globe valve does not.
Globe valves and gate valves are indispensable control components in various piping systems. Each kind of valve is different in appearance, structure and even functional use. If you look closely, the difference between globe valve and gate valve is still quite big.
