Valve model preparation standard example valve body code gray cast iron valve body why omitted?
3.7.5 nominal pressure is greater than or equal to 2.5MPa carbon steel valve body material code, in the model preparation will be omitted.
See details: "JB/T308-2004 valve type programming method":3.7.4 nominal pressure of less than 1.6MPa gray cast iron valve body material code, in the type of preparation to be omitted.
The most common and basic ones are often omitted. Gray iron is the most commonly used and basic for valves with pressure levels below 1.6MPa.When the pressure level reaches 2.5MPa, the valve body code grey cast iron valve body can not be omitted.
