This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of flanged cast steel seawater stop valves with flange connection dimensions in accordance with GB 569 and GB 2501. This standard is applicable to ship piping systems with fresh water and seawater as the medium. CB/T 3196-1995 Flange cast steel seawater stop valve CB/T3196-1995 Standard download decompression password: www.bzxz.net

Shipbuilding Industry Standard of the People's Republic of China
CB/T3196—1995
Shanghai Institute of Technology Supervision and Education
Tel. Q1973097
Flanged Cast Steel Seawater Stop Valve
Published on 1995-12-19
China State Shipbuilding Corporation
Implemented on 1996-08-01
Shipbuilding Industry Standard of the People's Republic of China
Flanged cast steel seawater stop valve
1 Subject content and scope of application
CB/T3196
—1995
Classification number: U52
Replaces CB:3196—83
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of flanged cast steel seawater stop valves (hereinafter referred to as stop valves) with flange connection dimensions in accordance with GB569 and GB2501. This standard is applicable to ship piping systems with fresh water and seawater as the medium. 2 Reference standards
Marine flange connection dimensions and sealing surfaces
General technical conditions for ship pipeline valves
GB2501
GB3032
Marine flange connection dimensions and sealing surfaces (four-digit) Marking of ship pipeline accessories
GB11698 Structural length of marine flange-connected metal valvesZB/TU52 001
Wall thickness of marine casting valves
3 Product classification
3.1 Type
The types of stop valves are specified as follows:
Flange connection dimensions are in accordance with GB569 straight-through stop valves. AS type-flange connection dimensions are in accordance with GB2501 straight-through stop valves. B type-flange connection dimensions are in accordance with GB569 right-angle stop valves. BS type-flange connection dimensions are in accordance with GB2501 right-angle stop valves. 3.2 Basic parameters
Basic parameters of stop valves are as shown in Table 1.
A, AS, B, BS
3.3 Structural dimensions of stop valves
Nominal pressure PN
3.3.1 The structure and basic dimensions of type A and type B stop valves are shown in Figure 1, Figure 2 and Table 2. Approved by China State Shipbuilding Corporation on December 19, 1995 Nominal diameter DN
40~150
65~150
200~250
Implemented on August 1, 1996
Nominal pressure
Square head to edge
Figure 1 Type A, type AS
Structural dimensions
CB/T3196—1995|| tt||Buy the right side
Figure 2 Type B, BS
Flange connection dimensions
Weight kg
Type A Type B
Nominal pressure
Structural dimensions
CB/T3196-1995
Continued Table 2
Flange connection dimensions
The structure and basic dimensions of AS and BS stop valves are shown in Figure 1, Figure 2 and Table 3. Table 3
Nominal pressure
Structural dimensions
Flange connection dimensions
Weight kg
Type A Type B
Weight kg
Type AS Type BS
3.4 ​​Marking example
CB/T3196—1995
Nominal pressure is 1.6MPa, nominal diameter is 40mm, flange cast steel seawater straight stop valve according to GB569 flange connection dimensions and sealing surface:||tt| |Stop valve
A16040
CB/T3196--1995
Flanged cast steel seawater right angle stop valve with nominal pressure of 1.0MPa and nominal diameter of 100mm, flange connection dimensions and sealing surface (four-position) according to GB2501
Stop valve BS10100
CB/T3196-1995
4 Technical requirements
4.1 Technical requirements for stop valves shall be in accordance with GB600. 4.2
Material of main parts of stop valves shall be in accordance with Table 4. Table 4
Parts Name
Valve body, valve cover
Cast tin bronze
Aluminum bronze
Cast aluminum bronze
ZG230-450
ZQSn10-2
QA19-2
ZQA19-2
4.3The flange connection dimensions and sealing surface of the stop valve shall comply with the provisions of GB569 and GB2501. 4.4The structural length of AS type and BS type shall comply with the provisions of GB11698, and the wall thickness of the stop valve shall comply with the provisions of ZB/TU52001. 4.5bzxZ.net
5Test methods and inspection rules
The test methods of stop valves shall comply with the provisions of GB600. The factory inspection items and requirements of stop valves shall comply with the provisions of Table 5. Table 5
Determination of mechanical properties of castings, chemical composition analysis Appearance inspection
Strength test
Sealing test
Each set of stop valves shall be inspected item by item according to Table 5 before leaving the factory 6
Marking and packaging
The marking of stop valves shall comply with GB3032.
The packaging of stop valves shall comply with GB600.
Standard number
CB772—86
CB883—83
GB4429--84
CB 883—83
Conform to CB772
Conform to GB600
Additional instructions:
CB/T3196—1995
This standard was proposed by the Pipe System Accessories Sub-Technical Committee of the National Technical Committee for Standardization of Marine Machinery. This standard is under the jurisdiction of the 603 Institute of China State Shipbuilding Corporation. This standard was drafted by Dalian Marine Valve Factory and 603 Institute. This standard was mainly drafted by Dan Guangwen and Wu Shaozeng. This standard is provided with a unified construction drawing.
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