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design basis
The design of the valve shall be in accordance with Q/320506 FDV01-20132:
1. GB/T 12224-2005 "General Requirements for Steel Valves"
2. GB/T 12220-1989 "General Valve Marking"
3. GB/T 12223-2005 "Connection of Partial Rotary Valve Drive Devices"
4. JB/T 12006-2014 "Welded Steel Pipe Valves"
5. GB/T 37827-2019. "Welded Ball Valves for Urban Heating"
Material Science:
Valve body: 20#
Sphere: SUS304
Valve stem: 2Cr13
Valve stem seal: Perfluororubber
Ball seal: PTFE+C
Valve stem height and structural length according to customer requirements
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