Questions about the self-control installation manual
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For the installation of that flow pressure guiding pipe, the gate valve used is DN15 SW φ23; after that, a socket-type straight-through welded terminal fitting FT φ12/φ22PE is connected. Are specifications such as φ23 and φ22 available?
Also, what does a cartridge-type welding terminal look like? Only know about cartridge-type threaded terminal connectors
In my personal opinion, for a socket-weld gate valve, DN15 SW φ22 should be the correct specification. Since the installation manual version 2012 was compiled by multiple organizations, some indicate DN15 SW φ22, while others indicate DN15 SW φ23. It causes chaos. φ22 is a marker indicating that a φ22 pipe can be inserted.
The manufacturer can produce it in any specifications requested.