This standard specifies the dimensions of screw-on connectors used in vacuum technology and the dimensions of the O-rings and bushings that match the connector tail tube. GB/T 4983-2003 Dimensions of quick-release connectors for vacuum technology Part 2: Screw-on type GB/T4983-2003 Standard download decompression password: www.bzxz.net

ICS 23.160
National Standard of the People's Republic of China
GB/T 4983---2003/ISO 2861-2:1980 replaces GB/T4983-1985
Vacuum technology---Quick release couplings--Dinensions-Part 2: Screwed type
(ISO 2861-2:1980(E), IDT)
Published on November 25, 2003
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on June 1, 2004
GB/T 4983--2003/ISO 2861-2: 1980 Foreword
This standard is equivalent to the international standard IS02861-2: 1980 (F) & Vacuum technology quick release connector dimensions Part 2: Tightening type English version).
This standard will replace (B/T4983--1985 Tightening type vacuum quick release flange) from the date of implementation. For ease of use, this standard has made the following editorial changes: a) Use decimal point'. \ replaces the comma " as a decimal point, b) deletes the preface of the international standard;
c) adds Chapter 7 and Chapter 8 that mention the appendix; d) the basic deviation code is changed to the tolerance value,
Appendix A and Appendix A of this standard are normative appendices, and Appendix B is an informative appendix. This standard was proposed by the China Machinery Industry Federation. This standard was proposed by the National Vacuum Technology Standardization Technical Committee (CSBTS/TC18) and belongs to TI. The responsible drafting units of this standard are: Hangzhou Yamato Thermomagnetic Electronics Co., Ltd. and Shenyang Vacuum Technology Research Institute. The participating drafting units of this standard are: Shenyang Scientific Instrument Group Research and Development Co., Ltd. of the Chinese Academy of Sciences. The main drafters of this standard are Liu Liming, Li Daori, Yu Zhengju, Zhang Mingda, and Zhang Zhenhou. The previous versions of the standards replaced by this standard are: ---GB/T4983-1985
1 Scope
GB/r4983—2003/ISO 2861-2:1980 Dimensions of quick-release connectors for vacuum technology
Part 2: Tightening type
This standard specifies the dimensions of tightening type connectors used in vacuum technology and the dimensions of the "shaped seal ring and its bushing that fits the connector tail pipe.
2 Normative references
The provisions in the following documents become the provisions of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) and revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions apply to this standard. GB/T4982-2003 Dimensions of quick-release connectors for vacuum technology Part 1: Tightening (1S028611:1974, IDT) 3 Requirements
Various tightening type quick-release connectors should be determined according to their nominal diameter and in reference to this standard. 4 Connector tail arm
Type see Figure 1, size see Table 1: The roughness of the tail pipe sealing surface in the figure should be less than 1.6μm: Medium H
Figure 1 Connector tail pipe
GB/T 49832003/IS02861-2,1980 Nominal
30[0.90”
17. 5±0. 135 15. 0
+0,060
22.5-±0.16520,0
31.0±0.19528.0
+0,260
+0,150
46. 0↓ ±.0, 19512. 5
These values ​​are listed for reference only. 5 Connector bushing
For type, see Figure 2; for dimensions, see Table 2.
Nominal diameter DN
Connector bushing dimensions
(0.3 ~ 0.4) × 45*
Figure 2 Connector bushing
Table 2 Connector bushing dimensions
Basic dimensions
±0.006 5
Basic"
Unit: mm
-1 0.15G
+ 0,160
Unit: mm
6" O\ seal diagram
G/T 4983—2003/RS0 2861-2.t980 See Figure 3 for the type and Table 3 for the dimensions. The recommended standard hardness of the O-ring is 65 Shore A. Figure 3 "O" seal turn
Table 3 "O" seal diagram dimensions
Nominal diameter
For the combination of clamping type and control type quick release connectors, see Appendix B.
8 Nut type and size
For the type and size of nuts, see Appendix C.
The unit is meter
GB/T 4983--2003/ISO 2861-2: 1980A, clamping type quick release connector
Appendix A
(Normative record)
Clamping type quick release connector
For the type, see Figure A. 1 to Figure A. 3, and the size is given in GR/T 49&2. Figure A.1 Connector
Figure A, 3
3"O\ ring seal
B.1 Twist-on type quick-release connector
Appendix B
(Normative Appendix)
GB/T4983-2003/IS02861-2:1980 Combination of clamping type and screwing type quick-release connectors The assembly method of the matching parts of the quick-release connector is shown in Figure B, 1. Figure 1
B.2 Clamping type quick-release connector
The assembly method of the matching parts of the quick-release connector is shown in Figure B.2. Figure B.2
B.3 Quick-release connector combined with screwing and clamping The tightening type quick-release connector can be directly connected to the tail pipe of the clamping type quick-release connector, as shown in Figure B.3. GB/T 4983--2003/ISO 2861-2:19B0 Fast oxygen connector housing pipe
\()\-shaped sealing enclosurebzxZ.net
""-shaped adjustment bracket
Quick release connector
C.1 Nut type and size
Appendix C
(Informative Appendix)
GB/T4983—2003/IS02861-2:1980 Twist-release quick release connector nut type and size See Figure C. 1 for type and Table C. 1 for size
1X45°
Direction 0.8
Figure C. 1 Nut
Table C.1 Nut dimensions
Nominal diameter
Basic maximum dimension
+0,150
Basic dimension
+0,150
-0, 150
G1 3/4\r
Unit: mm
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