T/ZZB 0991-2019
Parallel double-disc control gate valves for petroleum,chemical industries (English Version)
- Standard No.
- T/ZZB 0991-2019
- Language
- Chinese, Available in English version
- Release Date
- 2019
- Published By
- Group Standards of the People's Republic of China
- Latest
- T/ZZB 0991-2019
- Scope
- This standard specifies the terms and definitions, basic requirements, basic parameters and structural types, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of parallel double gate control gate valves (referred to as "control gate valves") for petrochemical industry. ,quality promise. The structure type of this standard control gate valve is a parallel double-gate gate valve; the end connection of the valve body is flange type or butt welding type, bolted to the bonnet, and rising stem structure. Steel gate valves used in petroleum, petrochemical, natural gas and related industries. Applicable to nominal pressure PN16 ~ PN420 (ANSI Class150 ~ Class2500), nominal diameter DN40 ~ DN1000 (NPS1-1/2 ~ NPS40), operating temperature -100 ℃ ~ +550 ℃. Control gate valves can be used to switch on, off, and regulate pipeline media. This standard applies to pneumatic, electric or electro-hydraulic control gate valves. The relevant content also applies to independent actuators and gate valve components.
T/ZZB 0991-2019 history
- 2019 T/ZZB 0991-2019 Parallel double-disc control gate valves for petroleum,chemical industries
