Detail of JB/T 11150-2011

Introduction of JB/T 11150-2011

Bellows sealing steel globe valve 1 Scope This standard specifies the type of construction, parameters, technical requirements, inspection methods, inspection rules, marking and delivery of bellows sealing steel globe valves. This standard is applicable to bellows sealing steel globe valves with nominal pressure of PN16~PN260 and nominal size of DN15~DN400. It may also serve as a reference for bellows sealing steel throttle valves and bellows sealing steel stop check valves. 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 (including any amendments) applies. GB/T 196 General purpose metric screw threads - Basic dimensions GB/T 197 General purpose metric screw threads - Tolerances GB/T 228 Metallic materials - Tensile testing at ambient 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 3089 Seamless ultra-thin wall stainless steel tubes GB/T 3280 Cold rolled stainless steel plate, sheet and strip GB/T 4238 Heat-resisting plate, sheet and strip GB/T 5796 (all parts) Trapezoidal screw threads 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 12221 Metal calves - Face to face, end to end, center to face and center to end dimensions GB/T 12222 Multi-turn valve actuator attachments GB/T 12224-2005 General requirements for industrial steel valves GB/T 12235 Steel globe valves and lift check valve for petroleum, petrochemical and allied industries GB/T 14992 Classification and designation for superalloys and high temperature intermetallic materials JB/T 6440-2008 Methods of radiographic examination for steel castings valves JB/T 7746-2008 Compact steel valves JB/T 7928 General purpose industrial valves - Delivery specification JB/T 8859 Globe valve - Potential pressure life test regulation JB/T 9092 Valve inspection and testing JB/T 10507-2015 The metal bellows for valves YB/T 5354 Cold-rolled plates of corrosion-resisting alloys 3 Types of construction and parameters 3.1 Types of construction The typical types of construction and main part names of bellows sealing steel globe valves are as shown in Figure 1 ~ Figure 4.

Contents of JB/T 11150-2011

Foreword i 1 Scope 2 Normative references 3 Types of construction and parameters 3.1 Types of construction 3.2 Parameters 4 Technical requirements 4.1 Pressure-temperature rating 4.2 Structural length 4.3 Connecting end 4.4 Body and bonnet 4.5 Disc 4.6 Seat 4.7 Stem and stem nut 4.8 Bellows assemblies 4.9 Stuffing box and packing 4.10 Gland 4.11 Connecting studs or bolts between body and bonnet 4.12 Hand wheel and operation 4.13 Potential pressure life 4.14 Non-destructive testing 5 Materials 5.1 Body and bonnet 5.2 Stem 5.3 Sealing face of seat and disc 5.4 Connecting gaskets for body and bonnet 5.5 Seat and disc 5.6 Connecting studs/bolts for body and bonnet 6 Test methods 6.1 Test of bellows assemblies 6.2 Valve pressure test 6.3 Helium mass spectrometer for leak detection 6.4 Measurement of body wall thickness 6.5 Measurement of stem diameter 6.6 Measurement of stem hardness 6.7 Measurement of sealing face hardness 6.8 Material composition analysis 6.9 Mechanical properties of materials 6.10 Potential pressure life test 6.11 Marking examination of body and bonnet 6.12 Examination of nameplate content 6.13 Non-destructive testing 7 Inspection rules 7.1 Inspection items 7.2 End-of-manufacturing inspection 7.3 Type inspection 7.4 Sampling method 8 Marking 8.1 Marking contents 8.2 Markings on the body and the bonnet 8.3 Markings on the nameplate 9 Supply Annex A (Informative) Common ASTM materials for bellows Figure 1 Bellows sealing steel globe valve of flanged ends Figure 2 Bellows sealing steel globe valve of welded ends Figure 3 Bellows sealing steel globe valve of flanged ends Figure 4 High-pressure bellows sealing steel globe valve Table 1 Common materials of bellows Table 2 Minimum number of cycle life tests for bellows Table 3 Number of potential pressure life tests for bellows sealing steel globe valves Table 4 Materials of stem Table 5 Materials of sealing face Table 6 Connecting gaskets for body and bonnet Table 7 Inspection items, technical requirements and inspection methods Table 8 Minimum base number and sampling number