1 Scope
This Standard specifies the structural types, technical requirements, materials, test methods and inspection rules, marking, packaging, storage and transportation of steel globe valves and lift check valves with bolted bonnets.
This standard is applicable to the steel globe valves and lift check valves with bolted bonnets and flanged or welded ends, with a nominal pressure of PN 16~PN 420, nominal dimension of DN 15~DN 400 and service temperature of -29℃~538℃, for petroleum, petrochemical and allied industries.
This standard is applicable to the straight pattern, angle or Y pattern globe valves, steel lift check valves and steel globe stop valves.
Steel throttle valves may refer to this standard.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB 150 Steel Pressure Vessels
GB/T 152.4 Fasteners-Counterbores for Hexagon Bolts and Nuts
GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions (GB/T 196-2003, ISO 724: 1993, MOD)
GB/T 197 General Purpose Metric Screw Threads-Tolerances (GB/T 197-2003, ISO 965-1: 1998, MOD)
GB/T 228 Metallic Materials-Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892: 1998)
GB/T 798 Bye bolts
GB/T 5796.1 Trapezoidal Screw Threads-Part 1: Profiles (GB/T 5796.1-2005, ISO 2901: 1993, MOD)
GB/T 5796.2 Trapezoidal Screw Threads-Part 2: General Plan (GB/T 5796.2-2005, ISO 2902: 1977, MOD)
GB/T 5796.3 Trapezoidal Screw Threads-Part 3: Basic Dimensions (GB/T 5796.3-2005, ISO 2904: 1977, MOD)
GB/T 5796.4 Trapezoidal Screw Threads-Part 4: Tolerances (GB/T 5796.4-2005, ISO 2903: 1993, MOD)
GB/T 7306.2 Pipe Threads with 55 Degree Thread Angle Where Pressure-Tight Joints are Made on the Threads--Part 2: Taper Internal and External Threads (GB/T 7306.2-2000, eqv ISO 7-1: 1994)
GB/T 9113 (All Parts) Integral Steel Pipe Flanges
GB/T 9124 Specification for steel pipe flanges
GB/T 12220 General purpose industrial valves-Marking (GB/T 12220-1989, idt ISO 5209: 1977)
GB/T 12221 Metal valves--Face to face, end to end, center to face and center to end dimensions (GB/T 12221-2005, ISO 5752: 1982, MOD)
GB/T 12222 Multi-turn valve actuator attachments (GB/T 12222-2005, ISO 5210: 1991, MOD)
GB/T 12224 General Requirements for Industrial Steel Valves (GB/T 12224-2005, ASTM B16.34a: 1998, NEQ)
GB/T 12228 General Purpose Industrial Valves-Specification of Carbon Steel Forgings
GB/T 12229 General Purpose Industrial Valves-Specification of Carbon Steel Castings
GB/T 12230 General Purpose Industrial Valves-Specification of Austenitic Steel Castings
JB/T 106 Valves Marking and Paint
JB/T 6440 Methods of Radiographic Examination for Steel Castings Valves
JB/T 8859 Globe valve-potential pressure life test regulation
JB/T 9092 Valve Inspection and Testing
3 Structural Types
3.1 Typical straight pattern globe valve is as shown in Figure 1.
3.2 Typical angle globe valve is as shown in Figure 2.
3.3 Typical Y pattern globe valve is as shown in Figure 3.
3.4 Typical lift check valve is as shown in Figure 4.
3.5 Typical globe stop valve is as shown in Figure 5.
GB/T 12235-2007/XG1-2011 The following standards are cited：
GB/T 12235-2007/XG1-2011 Cited by the following standards：
