This standard specifies the dimensions of clamping connectors used in vacuum technology and the dimensions of the O-rings and their supports that match the connectors. GB/T 4982-2003 Dimensions of quick-release connectors for vacuum technology Part 1: Clamping type GB/T4982-2003 Standard download decompression password: www.bzxz.net

ICS, 23. 160
National Standard of the People's Republic of China
GB/T4982—2003/IS02861-1:1974 replaces GB/T4982—1985
Vacuum technology
Quick release couplings
Part 1:Clamped type
(ISO2861-1:1974(E), IDT)bZxz.net
Issued on November 25, 2003
Silver Bureau of the People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on June 1, 2004
This standard is equivalent to the international standard ISO2861-1:1974(E) "Vacuum technology type" (English version).
GB/T4982--2003/ISO2861-1:1974 Quick-release connector
This standard replaces GB/T4982-1985 "Clamping type vacuum quick-release flange" from the date of implementation. For ease of use, this standard has made the following editorial changes: a) replace the comma "" as a decimal point with a decimal point; b) delete the foreword of the international standard; c) change the basic deviation code to the tolerance value. To make this standard usable, the clamp type and size are supplemented in Appendix A. Appendix A of this standard is an informative appendix. This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Vacuum Technology Standardization Technical Committee (CSBTS/TC 18). 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 Research and Development Center Co., Ltd. of the Chinese Academy of Sciences. The main drafters of this standard are: Liu Liming, Li Daotian, Yu Zhengnan, Zhang Mingda, and Zhang Zhenhou. The previous versions of the standards replaced by this standard are: -GB/T4982-1985. Part 1: Clamping GB/T 4982—2003/ISO 2861-1:1974 Quick-release connectors for vacuum technology
Part 1: Clamping type
This standard specifies the dimensions of clamping type connectors used in vacuum technology and the dimensions of the "O" rings and their supports that match the connectors.
Note: The dimensions of the connector diameter are specified here to ensure that the quick-release connector matches the corresponding ISO1609 vacuum flange dimensions. 2 Connectors
See Figure 1 for the type and Table 1 for the dimensions.
15±10°
Nominal diameter
"o" ring
Connectors
Connector dimensions
Basic dimensions
See Figure 2 for the type and Table 2 for the dimensions.
Basic dimensions
Unit: mm
GB/T 4982—2003/ISO 2861-1:1974 Nominal diameter DN
Figure 2 "O" ring
Table 2 "O" ring dimensions
a Can be replaced by *O\ ring with a diameter of 40.65mm and a cross-sectional diameter of 5.33mm. 4 Bracket
For type, see Figure 3, and for size, see Table 3.
Figure 3 Bracket
Table 3 Bracket dimensions
Nominal diameter
5 Clamp types and dimensions
For clamp types and dimensions, see Appendix A.
Basic dimensions
Basic dimensions
Unit: mm
Unit: mm
Appendix A
(Informative Appendix)
GB/T 4982-—2003/ISO 2861-1:1974 Clamping type quick-release connectors Clamp types and dimensions A.1 Clamp types and dimensions (Figure A.1 and Table A.1) Figure A1 Clamp
Table A.1 Clamp dimensions
Nominal diameter
Unit: mm
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