This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine flange cast steel side stop check valves with flange connection dimensions in accordance with GB569 and GB2501. This standard is applicable to marine piping systems with fresh water and sea water as the medium. GB/T 1853-1994 Marine flange cast steel side stop check valve GB/T1853-1994 Standard download decompression password: www.bzxz.net

[1C625.12-061 : 621.645-24
National Standard of the People's Republic of China
GB/T 1853 94
Marin flanged cast steel overhoard stop check valveWww.bzxZ.net
Published on 1994-06-30
National Technical Supervision Bureau
Implemented on 1995-04-01
National Standard of the People's Republic of China
Marine flanged cast steel overhoard stop check valve
Marine flanged cast steel overhoard stop check valve valve
1 Subject content and scope of application
E/T1853-94
Replaces GB1
This standard specifies the product classification, technical requirements, test methods, inspection specifications, and packaging of flange connection dimensions according to G9, G2GC (starting from the simplified version). This standard is applicable to ship connection systems that are divided into wave water and sea water. 2 Reference standards
GB56S-G
Marine method for steam connection and research cover
(H600-91 period evaluation valve busy general technical conditions G2:07-89 marine transport flange connection size and sealing surface (delivery) GB032-8a
Ship pipeline accessories mark
GB16 lying flange connection gold door pin structure length brand 2BT52CC1-89 marine life selection parts thickness reduction
3 Product classification
3.1 The specification for checking the stop is the following, type
A flange connection size bottom GB56 straight-through general side micro stop positive return flash: a delivery flange connection size according to GB5 straight side load stop penalty: AS
BS Type-
A flange connection size according to GB2 straight through flange size G2501 straight side width check, 3.2 Basic data of the check valve according to Table 1. Evil type
Nominal E force PN
3.3 The same structure and basic dimensions as required by 1 3.3.? A type can load side stop through the structure and basic size according to Figure 1. Research 2 and Table 2 State Technical Supervision Bureau 1991-06-30 approved nominal diameter DN
1955-04-01 implementation
GB/T 1853..-94
Figure 1A type, AS type
Smoke seat people return to drink industry
DW JN J30 DNS0 ~ DN I5
Dongji Finance School
CR185394
200:17
The structure and dimensions of A5 type and BS type side cut-off network are as shown in Figure 1, Figure 2 and Table 3. Table 3
Structure and small
marks
PS Plastic
nominal pressure is 0.6M1z, nominal diameter is mm, according to GB569 flange connection size, use the sealing surface of the moon flange cast straight-through check valve:
reverse check limit
A6080G8/165394
nominal pressure is 0.6MIa, nominal diameter is 8Cmm, connect GB2501 flange connection size and seal (inverted) use 3
stealth cast steel straight gate city with check valve:
GB/T 1853-94
creative check valve can be wide BS60sC
G5/T 133J-—S4
4 Technical requirements
Technical requirements for stop valves 4.71
4.2 Material specifications for stop valves 4.4
Min Xiu. Yan Ke
Quick aluminum and copper
7Q230-43
ZQA15-2
Flange connection dimensions and flange dimensions shall comply with the provisions of GR≤69 GB2501 4.3
4.4AS type and type stop valve structural length shall comply with the provisions of G11. The thickness of the stop valve shall comply with U52 (0!) 4.51
5 Test method
The test method for micro stop valves shall comply with the provisions of G603. 6 Inspection rules
6.1 Product inspection is divided into type inspection and factory inspection. When one of the following situations occurs, a type inspection should be carried out: new products and old products are transferred to the factory for trial production.
After formal production, if the structure, materials, and process have major changes that may affect the performance of the product, during normal production, a periodic inspection should be carried out: when the national quality supervision agency proposes a type inspection. 6.2 Type inspection and factory inspection items are listed in Table 5
Physical and chemical tests for zinc parts
Appearance inspection
Strength test
Formal inspection
6.3 The product can be shipped after the safety inspection listed in Table ≤ 10. Marking and packaging
1. The stop and return marks should comply with the regulations of GH3033, 72. The stop and return marks should comply with the current regulations of Gchuan 600, standard number
GB772-95
GB 883-83
CEB1429-61
CB7F2-86
should comply with GB600
add instructions,
This standard is proposed by China State Shipbuilding Corporation. GB/T1853-94
This standard is submitted by the Technical Committee for Standardization of Marine Machinery Pipe Parts. Six standards are issued by the East French ship) to the door "state", 603 Dream added. The standard pushes down to avoid ethnicity, age, Chen Zhonglian, Wu Shaozeng.
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