This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine quick-closing valves with flange connection dimensions in accordance with GB569 and GB2501. This standard is applicable to marine piping systems where the medium is fuel oil and other oils. GB/T 5744-1993 Marine Quick-closing Valve GB/T5744-1993 Standard download decompression password: www.bzxz.net

UDC 629. 12. 01
National Standard of the People's Republic of China
GB/T5744—93
Quick shutting valve for marine use1993-07-21Promulgated
State Administration of Technical Supervision
1994-03-01Implementation
National Standard of the People's Republic of China
Quick shurtting valvt for marine Dse1Subject inner sleeve and applicable rate
GB/T 5744—93
Generation CB S744-83
This standard specifies the product classification, technical requirements, test force method, inspection environment, marking and packaging of the flange reverse connection size according to GB5GP, GB2551 for quick-closing valves (hereinafter referred to as quick-closing valves). This standard is used for ship fuel and other mediums. 2 Reference standards
GB56J General technical conditions for flange connection dimensions and sealing surfaces for ship pipeline valvesbzxZ.net
G?501 Main dimensions and sealing surface of marine flange connection (four-dimensional) GB3032 Marking of front deaf road accessories
GB116% Structural length of marine flange-connected metal valves ZB/T1152 (1 Wall thickness of marine casting valve parts
JH952 Vibration test methods for marine electrical appliances
3 Product packaging
3.1 The types of quick-close are as follows: r
ASS type
AUS type
BQ Type
BSS type
AQS type
Flange connection size is connected to GB sonic manual quick-closing valve: flange connection size is connected to GB5 straight-through pneumatic quick-closing valve: flange connection size is connected to GB2501 straight-through manual quick-closing valve: flange connection size is connected to GB2501 self-opening pneumatic quick-closing valve. Flange connection size is according to GB56 right-angle manual quick-closing valve: flange connection size is connected to GB569 true single pneumatic quick-closing valve: flange connection size is according to GD2501 true angle manual quick-closing valve: flange connection size is according to 4 GB2501 direct use pneumatic quick closing valve. 3.2 Basic parameters of quick closing valve are as shown in Table 1.
AS.AQ.ASS.AQS
BS,BQ,BSS,BQS
Nominal output PN
Nominal source diameter N
2G~159
3.3 Structural dimensions of A5 type, AQ type, BS type and BQ type quick closing valve are as shown in Figure 1, Figure 2 and Figure 2. The National Technical Supervision Bureau approved the gas cabinet working pressure right H on July 21, 1993. 3~ 0. 7
1994-03-01 Actual drag
GB/15744-93
To 1 AS T, AQ .ASS Parts. AQ Type
Figure 2 BS Type BQ Type, BSS, BQS Type
Outline size
GBT 5744 -93
Flange size
15735612
11158364
1209374
155123104
0240268190
2251045
(emASingle
ASS, AQS, BSS and BQS plastic fasteners have structural dimensions as shown in Figure 1. Figure 2 and Table 33.
Straight (hg)
Overall dimensions
ASS BSS type AS type BSS type||t t||3.5 Marking example
GB/T5744-·93
Allowance dimension of flange
19065:50
1209070
190152
821748
3107510265225202
M1980g
1291112
514tM12
2251945
(era*>ASS typeAQS typeBSs typePQS type
9. 6 79. 8
Nominal diameter is 50mm+according to G569 flange connection size and sealing surface straight manual marine quick-close net, marine quick-close wide AS50GB/1574493
Nominal diameter is 50mm+according to GB5 standard connection size and sealing surface right angle pneumatic monthly quick-close net. New quick-close ring BQ50GB/T5744-93
11.912. G
Nominal diameter is G0mm, according to G2501 flange connection size and sealing suitable (four-position) straight pneumatic marine quick-close example. Marine quick-closing valve AQ550.GB/T5741-93
4 Technical requirements
4.1 Technical requirements for quick-closing valves shall be in accordance with 6B600. 4.2 The main parts and materials of quick-closing valves shall be in accordance with Table 4.* 4
Smoke conditions. Bisexuality
High quality account cap
ZG 230-450
He standard number
CH 775 --86
GB S99—88
Part name
Cover
Pneumatic distributor
Live stock
GB/T 5744--93
Continued Table 4
Brand No.
Non-ferrous
11 nickel 9 stainless steel welding rod
213 plate difficult to weld welding rod
Resistant to sugar
9-2 green
62 first adjustment
Stainless steel
GtSiMn
H1Cr19N1 9F
20r13 (512)
ZQAI9-2
4.3 The dimensions and length of the quick-closed valve shall be in accordance with GD2501 and G56.4.4 The structural length of the quick-closed valve bottom shall be in accordance with GB11698.4.5 The thickness of the quick-closed valve bottom shall be in accordance with ZB/TJ52G01.4.6 The quick-closed valve bottom shall be tested for closing with a working stress of C.3MPa in air. 4.7 The quick-closed valve bottom shall be tested for vibration in accordance with JB852. 4.8 The quick-closed valve bottom shall be tested for opening and closing, and the switch shall be required to be hot. 5 Test method 5.1 Strength test of quick-close according to GB601. 5.2 Pressurize the top of quick-close plate for sealing test. The test method shall be in accordance with the test rules of GB6006. 6.1 Factory inspection 6.1.1 Each group of quick-closes shall be inspected item by item and can be shipped after passing the inspection. 6.1.2 Factory inspection items shall be in accordance with Table 5. Mechanical properties determination, chemical composition, and blood test. Type test. Sealing water pressure test. Pneumatic closing test. Refusal test. 6.2 Type inspection 3 Factory inspection and supervision. Regular inspection. Standard number GE1220--8: G:B 218—X5
G130077
CB7638—86
GB$3·-63
GB 448484
G8 122—34
According to this standard:.1
According to this standard5. 3
According to this standard1.6
According to this standard4-7
GB/T 5744—93
62.1 In any of the following circumstances, perform point running. When the new product is finalized, the old product is transferred to the factory for production. After the formal production, if there is a major change in the process, which may affect the product performance, the national quality supervision agency proposes the requirement for type control inspection. 62.2 The items of type inspection shall be in accordance with Table 6.
7 Marking and packaging
7.1 The marking of quick-closing valves shall be in accordance with GB3032.
7.2 The packaging of quick-closing valves shall be in accordance with GB60.
7.3 The quick-closing valves that have passed the inspection shall be sealed with a plate or plastic at the inlet and outlet flanges, and then assembled and stored in a dry place. Additional remarks:
This standard is proposed by China National Shipbuilding Industry Corporation. This standard is under the jurisdiction of the National Marine Machinery Standardization Technical Committee Pipe System Accessories Sub-Technical Committee. This standard is drafted by China Shipbuilding Corporation and completed by Institute 603. The main drafter of this standard is the country.
The wood standard was first released in 1985. This standard mainly contains three contents. This standard promotes the original standard B600-76 from the beginning of its implementation. This standard is provided with unified engineering drawings.
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