Gate valve size issues
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According to the national valve standards, gate valves do not come in sizes smaller than DN25. However, some valve manufacturers’ sample catalogs include national standard gate valves with a size smaller than DN15 – according to what standards are these produced? Is it easy to purchase?
Petroleum and Chemical Plant Process Piping Installation Design Manual, Volume 3: Valves, 5th Edition. Check this – the minimum size is DN15
It’s easy to purchase; DN15 falls within the normal range. For standards, just refer to what’s mentioned above
The amount used in this case might be small, so manufacturers may not have much in stock. But it definitely can be purchased!
This specification is available, and it can be made according to your requirements.