Regarding the orientation issue of slip joints
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I remember that when connecting flexible joints, there was no need to consider the direction of fluid flow. However, after checking Baidu Baike, I found a statement saying that flexible joint connections have a directionality – the fluid flows from the male port to the female port; workers on construction sites jokingly refer to this as \"fluid entering through the male port and exiting through the female port\", and it must not be connected in the reverse order. Excuse me, what is the principle behind that sentence above?:o
The connection using a swivel joint has a directionality: the flow of the medium goes from the male port to the female port. Workers on construction sites jokingly refer to this as \"male in, female out\"; it must not be connected in reverse. Guess what: if it’s a temporary pipe, it doesn’t matter ； For pipes that are used over a long period of time, if the flow is from the male connector to the female connector, in line with the direction of the fluid, the likelihood of leakage is lower. If, on the other hand, the flow is from the female connector to the male connector, the fluid near the pipe wall will reach the junction area between the connectors, which could lead to continuous erosion of that seam, making it harder to maintain a tight seal in the future
The male thread provides a throttling effect, preventing the material from leaking out from the threaded end
Hehe, it’s not clear what this union fitting looks like. According to the general principles of pipe fittings, this orientation is meant to facilitate uniform disassembly. As for the rest, it doesn’t make sense. Since the gasket is not directly exposed inside the pipe, it is protected by a raised surface, creating an \"inner steel ring\" that safeguards the gasket. It’s of little use other than determining the disassembly direction. Because it is difficult to determine the direction in which to unscrew the threads when removing such union joints. This is my personal understanding for reference only.
For ordinary media at low pressures, direction doesn’t need to be a major concern; however, in more demanding high-pressure situations, it is important to pay attention to it.
Male in and female out, or to relatively reduce leakage?