This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine flange cast steel stop check valves (hereinafter referred to as stop check valves) with flange connection dimensions in accordance with GB/T 569 and GB/T 2501. This standard applies to stop check valves for ship piping systems. GB/T 585-1999 Marine flange cast steel stop check valves GB/T585-1999 Standard download decompression password: www.bzxz.net

ICS 47. 020. 30
National Standard of the People's Republic of China
GB/T585-1999
Marine flanged cast steel stop check valves
Marine rast steel flanged stop check valves1999-04-15 Issued
1999-12-01 Implementation
National Quality and Technical Supervision Commission issued
GB/T5B5—1999
This standard is a revision of GB/T585-19996 marine flanged cast steel stop check valve and GB/T1116881989 marine flanged cast steel stop check valve (four-position). The flange connection dimensions specified in this standard are in accordance with GB/T 660 and GB/T 2501. The flange equivalent to GB/T 2501 adopts ISO2084. The junction length equivalent adopts ISO5752, which meets the needs of building export licenses. According to the flange end of GB/T250I, the specification has been expanded. After the revision, PN1.0 MPa, nominal diameter is DN 200, DN 250 and DN 3001. For the original PN1.6 MPa, nominal diameter is increased / DX 175, DN 200 and DN 250. This standard is effective from now on, and replaces GB/T555-1976, GB/T11698:1983, CBM49-1981, CBM 52-1981, CBM 55-1981, CBM 58-1981, CBM 50-1981. This standard was proposed by China State Shipbuilding Corporation. This standard is owned by the 601 Institute of China State Shipbuilding Corporation. The unit of this standard is Dalian Shipbuilding Industry Corporation. The main drafters of this standard are: Weng Shigong, Qiu Jinquan, Guo Peixian, and Mai Xiang. 1 Scope
National Standard of the People's Republic of China
Marine cayt steel flanged stop rheck valves
Marine cayt steel flanged stop rheck vaves GB/T 585—1999
Daishan GB/T 35—1976
GB/T 11688 1989
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine cayt steel flanged stop rheck valves (hereinafter referred to as stop rheck valves) of GB/T569 and GB/L2501. This standard applies to the check valves of the ship's general system. ? Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. The parties using this standard should discuss the currency of the following standards. GB/5-1965 Seat connection dimensions and sealing surface for marine use GB/T G00--1991 General technical conditions for marine pipelines GB/T 2501-1989 Marine flange connection dimensions and sealing surface (four-digit) GB/T3032-1989 Marking of marine general pipeline accessories GR/T 11698-1989 Structural length of marine flange-connected metal valves CB/T 3927--1S99 Wall thickness of marine castings 3 Product classification 3.1 The types of stop valves are specified as follows: Type A: - Flange connection dimensions are in accordance with GB/T 569 straight-through double stop check valve: B type -. Flange connection dimensions according to GBT569 right-angle stop check valve: AS type · · Flange connection dimensions according to GB/T2501 true-through stop positive return valve; flange connection dimensions according to GB/T 2501 right-angle stop check valve, BS diameter
3.2 Basic parameters of stop check valves are shown in Table 1. Table 1
Basic parameters of stop check valves
Nominal pressure PN
State Administration of Quality and Technical Supervision 1999- 04 - 15 Approved nominal diameter N
65~150
125--150
65--100
20~-50
200--30n
1G0-250
20~150
65--100
200-55
Nearby media: water, lubricating oil, sugar oil and temperature not exceeding 300°C; fresh water, oil, fuel oil and steam with a temperature not exceeding 400°C; washing water, dispersant oil, tender oil and resistance not exceeding 300°C; fresh water, lubricating oil, fuel oil and liquid with a temperature not exceeding 400°C; 1999-12-01 implementation: GB/T585 1999 3.3: PV1.0, 1.6 and 2.5 MPa. The structure and basic dimensions of A-type and B-type stop check chambers are shown in Figure 1, Figure 2 and Table 2. DN20~~50
Figure 1A type, AS type stop check valve (DN20~150) Table 2
Figure 2B type, BS type stop check valve (DN20~150) PV1.0.PN1.6 and PN2.5MP A type. B type stop check valve basic dimensions structural size
Type A type
125!400
M111180
Type A type B type
14.712.7
GB/T 585—1999
3.4PN4.0 and PN6.4MPa A, B type stop check valve structure and basic dimensions see Figure 3, Figure 4 and Table 3, DN205
Figure 3A type AS stop check valve
Figure 4B type, BS type load-carrying check valve
Table 3PN4.0 and PN6, 4MPa A, B type stop check valve basic dimensions nominal nominal
joint dimensions
F30334
3.5PN4.0, PN1.6 and PN2.5MPa AS For the structure and basic dimensions of the AS and BS positive check valves, please refer to Figure 1, Figure 2, Figure 5, Figure 6 and Table 4 (DN20~150 see Figure 1 and Figure 2; DV175~300 see Figure 5 and Figure 6). Nominal
GH/T 585 -- 1999
Figure 5AS positive check valve (DN175--310)
Figure 6S positive check valve (DN173~-300)
Table 4 Basic dimensions of AS and BS positive check valves with PN1.0, PN1.6 and PN2.5MPa!
ASBSES
150480
390!115
625547
2171203
115765
M: 6250
M21360
M211 595 3h
: I | 24
50 1 :3 m:
u24 216
31.2:32.0
13.9.45.5
55.6:61.4
11.5±4.2
1721. 8 20. 6
26.7124.6
3. 4 37. 5
59. 9 57, 1
CB/T 585—1999
3.6PV4.C and PN6. 4MPa AS type BS type cut-off stop The structure and basic dimensions are shown in Figure 3, Figure 4 and Table 5. Table 5 FN2. 5 and PN6. 4MPa AS type, 13S type cut-off, stop The basic dimensions of the nominal nominal
Force diameter
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Nominal pressure is 2.5 MPa, nominal diameter is 50 mm = single benefit, slow speed, etc., in accordance with CB/T 559 The true through-type ship is used in the casting pin and the certificate is correct. The load stop and return A25050GB/T585-1999 is used. The nominal pressure is 1: 0 MPa, and the nominal diameter is 2[i1 t1 , flange connection dimensions conform to GB/T 2501 true angle marine standard heat stop:
technical requirements of BS10900 G3/585-19994
4.1 End The mathematical requirements for positive rounds are based on LFR/T 600.4.2 Please refer to the fee for some important materials for review during the quarter. Main parts of the stopper: Material: Part name: Sealing plate: FNS2.5 M1: PN4. MPa
Casting under high carbon solution
4.3 The flange connection dimensions for the end-stop shall be in accordance with the specifications of GB/569, GB/T25014.4AS type and BS type. Distance, stop: The average length of the return joint is in accordance with GB/T 11638, 4.5 and the remaining width of the stop is in accordance with (R3927. Material
230-4A1r
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/T 599 -1988
GB/I 1220 - 1092
GB/T 18357H5
5Test methods and inspection rules
GB/T 585
5.1 Test methods and inspection rules for stop check valves are in accordance with GB/T6005.2
Type inspection and factory inspection items are shown in Table 7. 1999
Table 7 Stop check valve Items of valve type inspection and factory inspection
Determination of mechanical properties of parts
Appearance inspection
Hydraulic pressure test of valve surface
Hydraulic pressure test of sealing
|tt||Each stop valve shall be inspected item by item in Table 7 before leaving the factory. 5.3
Marking and packaging
The marking of the stop valve shall comply with GB/T3032. The packaging of the return valve is in accordance with GB/T600.
Special CB 772 regulations
Conforms to the regulations of GB/T600
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