This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of water flange cast steel gate valves with flange connection dimensions GB 569 and GB 2501. This standard is applicable to ship piping systems with the media being fresh water, sea water and lubricating oil. CB/T 466-1995 Flange cast steel gate valve CB/T466-1995 Standard download decompression password: www.bzxz.net

Shipbuilding Industry Standard of the People's Republic of China
CB/T 466-1995
Flanged Cast Steel Gate Valve
Published on 1995-12-19
China State Shipbuilding Corporation
Implementation on 1996-08-01
Shipbuilding Industry Standard of the People's Republic of China
Subject Content and Scope of Application
Steel Gate Valve
CB/T466
Classification Number U53
Replaces CB466-76
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of flanged cast steel gate valves (hereinafter referred to as gate valves) with flange connection dimensions in accordance with GB569 and GB2501. This standard is applicable to ship piping systems with fresh water, fuel oil and lubricating oil as the medium. Reference standards
GB569—65
Marine flange connection dimensions and sealing surfaces
GB600—91
General technical conditions for ship pipeline valves
Marine flange connection dimensions and sealing surfaces (four-digit) GB2501—89
GB3032-89
Marking of ship pipeline accessories
Structural length of marine flange-connected metal valves GB11698-89
Wall thickness of marine casting valves
ZB/TU52001-89
3 Product classification
3.1 Type
The types of gate valves are as follows:
Type A - flange connection dimensions according to the gate valve of GB569 Type AS - flange connection dimensions according to the gate valve of GB2501 3.2 Basic parameters
The basic parameters of gate valves are in accordance with Table 1.
A, AS
3.3. Structural dimensions of gate valves
Nominal pressure PN
3.3.1 The structure and basic dimensions of Type A gate valves are in accordance with Figure 1, Figure 2 and Table 2. China State Shipbuilding Corporation approved the nominal diameter DN on December 19, 1995
50~100
125~150
175~300
350~500
implemented on August 1, 1996
CB/T466-1995
DN50~300
Figure 2DN350~500
Nominal pressure PN
Nominal diameter
Structural dimensions
1045530
1228580
4801315635
CB/T466—1995
The structure and basic dimensions of AS type gate valve are as shown in Figure 1, Figure 2 and Table 3. Table 3
Nominal pressure PN
Nominal diameter
3.4 ​​Marking example
4571420645
Structural size
4321330
Tr22×10
(P5)LH
Tr24×10
(P5)LH
Tr26×10
(P5)LH
T r28×10
(P5)LH
Tr30×12
(P6)LH
Tr36×12
(P6)LH
Tr40× 12
(P6)LH
Tr22×10
(P5)LH
Tr24×10
(P5)LH
Tr26×10||t t||(P5)LH
Tr28×10
(P5)LH
Tr30×12
(P6)LH
Tr36×12
(P6)LH
Tr40×12
(P6)LH
CB/T466—1995
Nominal pressure is 0.4MPa, nominal diameter is 250mm, according to GB 569 Flange connection dimensions and sealing surface of flange cast steel gate valve: Gate valve A4250CB/T466-1995
Nominal pressure is 0.4MPa, nominal diameter is 250mm, according to GB2501 Flange connection dimensions and sealing surface (four-position) flange cast steel gate valve:bzxz.net
Gate valve AS4250CB/T466-1995
4 Technical requirements
4.1 Technical requirements of gate valves are in accordance with GB600.
Material of main parts of gate valves is in accordance with Table 4.
Valve body, valve cover, valve core
Square nut
Seal ring
4.3. The structural length of AS type gate valve is in accordance with GB11698. Name
Aluminum bronze
Stainless steel
Stainless steel
ZG230-450
QA19-2
1Cr18Ni9Ti
4.4 The flange connection dimensions and sealing surface of the gate valve shall comply with GB569 and GB2501 respectively. The wall thickness of the gate valve shall comply with ZB/TU52001.
Test methods and inspection rules
The test methods of the gate valve shall comply with GB600.
The factory inspection items of the gate valve shall comply with the provisions of Table 5. Table 5
Determination of mechanical properties of castings, chemical composition analysis and appearance inspection
Strength test
Sealing test
5.3 Each group of gate valves shall be inspected item by item according to Table 5 before leaving the factory. 6 Marking and packaging
6.1 The marking of the gate valve shall comply with GB3032.
6.2 The packaging of gate valves shall comply with GB600.
Standard No.
CB772—86
GB4429-84
GB1220—84
Conforms to CB772-86
Conforms to GB600
Additional Notes:
CB/T466-1995
This standard is 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, with participation from Dalian Shipyard and 603 Institute. The main drafters of this standard are Shan Guangwen, Zheng Bencheng and Wu Shaozeng. This standard is provided with a unified construction drawing.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.