This standard specifies the terms and definitions, structural type, model and parameter, technical requirements, test, inspection rules, marking, packaging, protection and storage of metallic sealing butterfly valve.
This standard is applicable to metallic sealing butterfly valve (hereinafter referred to as butterfly valve), of flange connection, wafer connection and welded connection, with nominal pressure of PN2.5~PN160 and Class 150~Class 900, nominal dimension of DN50~DN6000, and temperature of -29℃~538℃.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 150 (All parts) Pressure Vessels
GB/T 152.4 Fasteners - Counterbores for Hexagon Bolts and Nuts
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1 : Method of Test at Room Temperature
GB/T 1047 Pipework Components - Definition and Selection of DN (Nominal Size)
GB/T 1048 Pipework Components - Definition and Selection of PN
GB/T 9113 Integral Steel Pipe Flanges
GB/T 12220 Industrial Valves - Marking
GB/T 12221 Metal Valves - Face to Face, End to End, Center to Face and Center to End Dimensions
GB/T 12223 Part-turn Valve Actuator Attachments
GB/T 12224 General Requirements for Industrial Steel Valves
GB/T 12238 Flanged and Wafer Resilient Seal Butterfly Valves
NB/T 47013.2 Nondestructive Testing of Pressure Equipment - Part 2: Radiographic Testing
NB/T 47013.3 Nondestructive Testing of Pressure Equipment - Part 3: Ultrasonic Testing
NB/T 47013.4 Nondestructive Testing of Pressure Equipment - Part 4: Magnetic Particle Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipment - Part 5: Penetrant Testing
NB/T 47014 Welding Procedure Qualification for Pressure Equipment
3 Terms and Definitions
For the purposes of this document, the following term and definition apply.
3.1
metallic sealing butterfly valve
butterfly valve sealing pair, namely the butterfly valve with sealing face of valve body (also referred to as valve seat) and butterfly plate of metallic-to-metallic pair and that with valve body and butterfly plate of metallic and nonmetallic multilayer composite-to-metallic pair
Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Structural Type, Model and Parameter 5 Technical Requirements 6 Test 7 Inspection Rules 8 Marking 9 Packaging, Protection and Storage Bibliography Figure 1 Typical Structural Types of Butterfly Valve Figure 2 Typical Eccentric Types of Butterfly Valve Figure 3 Double-flange Connection Figure 4 No-flange Wafer Connection Figure 5 Single Flange or Ear Handle Wafer Connection Figure 6 U-section Wafer Connection Figure 7 Welded Connection Table 1 Flow Rate Table 2 Position Tolerance of Flange Bolt Hole Table 3 Materials for Main Parts Table 4 End-of-manufacturing Inspection and Type Inspection of Butterfly Valve Table 5 Sampling Quantity
