Regarding the connection of the pressure gauge
Thread Content
Excuse me, on the installation diagram of the pressure gauge, how is the reducer connected? If the socket-welded end of ∅ 18 is connected to the gate valve, then how is the flat end of ∅ 22 connected?
The reducing coupling is inserted into a seamless steel pipe with ∅ 18 on one end, and into a seamless steel pipe with ∅ 22 on the other end
There’s a chance to see the actual item in person; that socket-welded jumper is just a \"plug\" with one end larger and the other smaller”
It’s unnecessary; the valve can be connected directly to a 18-inch pipe
The end at 22 is inserted into the socket gate valve and welded, while the end at 18 is welded to the pipe at 18.
At first I thought the same thing – it felt a bit awkward. Using a 22-mm short pipe seemed more in line with the installation standards; inserting it directly into the socket-welded gate valve looked a bit strange
I also think it’s fine to just plug it in directly
Both ends are socket welds. One end at 22 is welded by socket welding to the flange, while the other end at 18 is welded by socket welding to the stainless steel pipe. This short circuit is equivalent to a straight tube with different inner diameters at both ends.
Yes, I’ve realized it now too – I was being silly; I kept thinking that the socket weld seam should be at least 1.5 mm thick, so I didn’t realize that the 22 mm end was actually inserted into the valve. It turns out he didn’t take the weld seam into consideration