Standard No.:	JB/T 8527-2015
English Name:	Metallic Sealing Butterfly Valve
Chinese Name:	金属密封蝶阀
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	Ministry of Industry and Information Technology
Issued on:	2015-10-10
Implemented on:	2016-3-1
Status:	valid
Superseding:	JB/T 8527-1997 Butterfly Valves for Metal Sealing
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	240.0
Delivery:	via email in 1 business day

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