This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine flange bronze check valves (hereinafter referred to as check valves) with flange connection dimensions in accordance with GB569 and GB2501. This standard is applicable to marine piping systems with media such as seawater, fresh water, lubricating oil, fuel oil and steam with a temperature not exceeding 250°C. GB/T 589-1993 Marine flange bronze check valve GB/T589-1993 standard download decompression password: www.bzxz.net

1C. 629 12. C1 : 621. 646. 2u 52
National Standard of the People's Republic of China
GB/T58993
Marine bronze flanged check valves
Marine bronze flanged check valves1993-05-24Promulgated
State Bureau of Technical Supervision
Implementation on 1994-01-01
National Standard of the People's Republic of China
Marine bronze flanged check valves
Mnrine hrauze flanged check valves1Subject content and applicable range
GB/T589—93
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine flanged check valves (hereinafter referred to as positive return valves) with dimensions according to GR569 and GB251. This standard is applicable to the piping systems of ships that carry medium-temperature water, water suction, secretion, oil exhaust and steam that does not exceed 251℃. 2 Reference standards
B59 Marine flange connection dimensions and sealing surface GB60 Marine pipe modification parts and technical specifications GB25U
Marine flange connection dimensions and sealing surface (in Chinese) GH3132 Marking of pipeline accessories
G11698 Marine flange construction metal structure ZR/T52001
New casting valve parts
3 Product classification
3.1 Check valve types are as follows:
A Flange connection size is connected to CB69 self-passing type E Check valve width: B Type -
Flange connection size is connected to B55 angle type check valve, flange connection size is in accordance with GB2501 Nantong type check valve flange connection size is in accordance with 2501 right angle type check valve. 3.2 Basic parameters of check valves are shown in Table 1.
Nominal pressure PN
33A type, 3 type with the same structure size refer to Figure 1, Figure 2 and Table 2. National Technical Supervision General 1993-05-24 World Standard Diameter CN
20-15
15--125
G5--125
15~100
1994·01-01 implementation
Attachment 1A type, AS type
Overall dimensions
GB/T589
3.4 ​​type mountain tuberculosis 1
2 H type, type
16.114. 2
19. E13,3
BSAS type
J50 1 17:
3.5 indicates full
3S type
c 1 =21
GB/T59-93
M16:
ra 1 7.1
Public force 2.5MP. Nominal diameter is bJmm. According to the diameter connection size of GB569 and the sealing diameter of the book month fast flange straight through check depth:
Ic return width
A25050
GB/T 56S
Nominal pressure is 1.5MP, nominal thread is 125m, flange connection size of B2521, seal (four-position) marine flange, straight check valve
Check valve S16125
H/T589:93
4 Technical requirements
4.1 Check valve or attached technical requirements,
4.2 The materials of the valve body, mesh plate and mesh cover of the check valve are all made of special 22510-21 or zinc to be made. The order number is 5r.: 1, 5 88383.
GH/T 589--93
4.3 The flange connection size of the check valve shall be in accordance with GR569, GB2:014.4AS type and S type check valve structure length according to G3116. 4.5 The wall thickness of the check valve shall be in accordance with 2B/TU52(01. 5 Test methods and inspection rules
5.1 The test method of the check valve shall be in accordance with GB60.
5.2 Type control and factory inspection items shall be in accordance with Table 4 Table 4
Chemical composition inspection
Observation and inspection
Strong water test
Tightness transformer
5.3 Each product shall be shipped only after passing the inspection of the table + strong items. 6 Marking and packaging
6.1 Marking of the check valve shall be in accordance with Table 4 GB3032.
6.2 The packaging of the closed circuit shall be in accordance with BSU.
Additional instructions,
This standard is issued by China Shipbuilding Industry Corporation. This standard is issued by China Shipbuilding Industry Corporation 03 Institute, and this standard is responsible for the reform by Dalian Ship Design and Research Institute. 653 Institute and 6502 Factory participated. The main drafter of the standard was Li Yuxian.
Comply with 4H8RX regulationswwW.bzxz.Net
Conform to GB6(9 regulations
This standard was formulated as national standard GB589-5 in 1355, and was revised to GB589-76 for the first time in 1975, and revised for the second time in 1083.
From the date of implementation of this standard: Speed ​​​​external standard CBM71-81
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.