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Hi Marcelo, The EN 12516 is made for Steel Valves. Cast Iron is not steel and has another code. In most times also a higher test pressure (2x maximum working pressure). The EN 12156 Part 1 is the European version of ASME B16.34. The difference is that the European Steels are tabbeled in...

Stainless steel 316 or 316L is suitable for 20°C, on shore conditions and not close to the sea. These values are for potable water. But water is not water, you can have brackish water, sea water, water from a well etc. Temperature and place of use is also important. On the Northsea, you can use...

In section 4 the standarized corrosion and erosion allowance (c2) is taken up. I am wondering why the following values are used: - 1 mm for ferritic and ferritic-martensitic steels - 0 mm for all other steels - 0 mm if eco ≥ 30 mm, or if ec1 ≥ 30 mm Why has ferritic and ferritic-martensitic...