2 1/4 CR BODY Gate Valve
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Dear teachers, I have a request for a quote regarding a gate valve: GATE VALVE, 2500LB, BE END, 2 1/4 CR BODY W/ 13CR/HF API TRIM 8, VCGUHDRW； The maximum operating temperature is 593°C. What’s confusing is what material the 2 1/4CR BODY is made of? I checked and found that the plate material is ASTM 387 22CL.1, while the tube material is ASTM 691 2 1/2 CR. What grade should be used for the valve castings or forgings? The commonly used valve castings for high-temperature steel are WC6 and WC9 ； So which of these two is more suitable to recommend to the customer? Thank you so much!
There was a mistake above; it’s BW weld connection, not BE
I just checked ASTM691; 2-1/4CR contains 2.15% chromium and 1% molybdenum, which means it is a chromium-molybdenum steel. It’s too cumbersome to match valve grades with steel grades. Based on the chemical analysis of WC9, it can be determined that it fully meets the requirements for the valve body material specified by the original poster. WC9 is specifically recommended for use.
Thank you. I’ll recommend WC9 to the client right away
WC9 should be written as 2 1/4 CR 1Mo