Some standard content:
C8 47, 020 30
No. 7722—2000
People's Republic of China Shipbuilding Industry Standard
CB/T3843—2000
Pressure relief valve ... This standard is proposed by the National Technical Committee for Standardization of Marine Machinery and its technical subcommittee. This standard is proposed by China Shipbuilding Industry Comprehensive Technical Research Institute. The initiating unit of this standard, Dajin Shipbuilding Co., Ltd., is the main drafter of this standard. This standard provides a construction drawing.
1 ScopebZxz.net
CB/T 3B43-2000
Pressure relief valve
This standard specifies the classification, requirements, test methods, inspection tariffs, standards and color matching of pressure relief valves (hereinafter referred to as pressure relief valves). This standard is applicable to the design, manufacture and acceptance of relief valves in fire, seawater and water pipeline systems. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown at the time of publication of this standard are valid. All standards will be revised. All parties using this standard shall consult the relevant standards for the latest version. Version availability, GB/T600-1991 Lead-acid road reading material application technical case GB/T2501-1989 Super hot flange connection size and seat surface (four-inlet) GB/T3032-1989 Whole-pipe reading material mark GB/T1169-19B9 Flange connection wind balance door connection length CB3021-1994 Safety control technology requirements and performance test methods CB3927-1999 Stop valve mesh penetration
3 Classification
3.1 The type of the release valve is a right angle type.
3. 2 Basic parameters of release test 1
Table 1 Basic parameters of test surface
Working pressure P
Content temperature DN
40-100
C8/T 38432000
3 3 The corresponding period and basic dimensions of the key effect are shown in Figure 1 and Table 2. Figure 1
Pressure release
Maximum expansion structure and source rate size
Key diameter
Critical structure size
Handbook example
The working pressure is 0.4MPa. The release room with a diameter of 100 is marked as the front
CB/1 3843-2000
(3
4.1 Main materials of release room ||CB/T 3843—2000
Main industry of adjustment
Part name
Width, width, etc. of the parts to be adjusted
Hardness ... 5.1 Test method CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021, CB3021 4 Blood test and inspection items Requirement number
Appearance inspection
Inspection items
Chemical composition and mechanical properties of castings
Strength test
Seal test
Opening pressure
Freezing force
Surface pressure and pressure test
Main quantities of inspection method
Taiwan number
GEVT 94-t9as
CB/T 13819-1994
Ge/T 1213-09
blood acid test
out of Guangxie stock
7 standard and the most
7.1 liberation wide standard benefit connection GB/3032.
select the effective packaging loss GB/T600.
CH door 3843-2000
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