1 Scope
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
GB/T 13927-2008 Industrial Valves - Pressure Testing
GB/T 17219 Safety Evaluation Criteria for Drinking Water Distribution Equipment and Protective Material
GB/T 17241.6 Integral Cast Iron Flanges
GB/T 17241.7 Specifications for Cast Iron Pipe Flanges
GB/T 30832 Valves - Test Method of Flow Coefficient and Flow Resistance Coefficient
JB/T 106 Valves Marking and Paint
JB/T 308-2004 Valves Model Designation Method
JB/T 5300 General Purpose Industrial Valves Material - Selection Guideline
JB/T 7928 Industrial Valve - Delivery Specification
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
