This standard specifies the basic requirements, structural types and parameters, technical requirements, test methods and inspection rules, markings, supply requirements and quality assurance of high-pressure and ultra-high temperature hydraulic stop valves (hereinafter referred to as valves). This standard applies to flange-connected or butt-welded valves with nominal pressures PN100~PN420, pressure levels Class600~Class2500, nominal sizes DN150~DN500, NPS6~NPS20, and medium temperatures not exceeding 900°C.
T/ZZB 0120-2016 history
2016T/ZZB 0120-2016 High pressure super high temperature hydraulic operated stop valve