This standard specifies the structural type, size and technical requirements of the packing pressure plate. This standard is applicable to the stuffing box of cast steel gate valves with nominal pressure pn 1.6～6.4MPa and nominal diameter DN50～300mm. JB/T 5207-1991 Packing pressure plate JB/T5207-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 5207-1991
Packing Plate
Published on 1991-07-23
Ministry of Machinery and Electronics Industry
Implemented on 1992-07-01
Mechanical Industry Standard of the People's Republic of China
1 Subject Content and Scope of Application
This standard specifies the structural type, size and technical requirements of the packing plate. JB/T5207-1991
This standard applies to cast steel gate valve stuffing boxes with nominal pressure P%1.6~6.4MPa and nominal diameter Ds50~300mm. 2 Reference standards
GB11352
GB1804
Types and dimensions
Casting carbon steel parts for general engineering
Limit deviation of dimensions without tolerances
Tolerances and fits
The structural type of the packing plate is shown in the figure, and the dimensions are as specified in the table. SR
Approved by the Ministry of Machinery and Electronics Industry on July 23, 1991D
The rest are implemented on July 1, 1992
Wide rod screw
Thread diameterwww.bzxz.net
4 Technical requirements
JB/T5207-1991
4.1 The material is ZG25II, and the technical requirements are in accordance with the provisions of GB11352. 4.2 The casting fillet is determined by the process.
3 The tolerance grade of dimensions without tolerance shall be IT14 as specified in GB1804. 4.3
Additional Notes:
This standard was proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry. P
This standard was drafted by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry and the Beijing Valve Research Institute. The main drafters of this standard are Lu Peiwen, Zhang Huayou, Hong Miancheng and Wang Jingxin. s
People's Republic of China
Mechanical Industry Standard
Packing Plate
JB/T 52071991
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Format 880×1230
Print Sheet 3/8
Word Count 4,000
First Edition in January 1993
First Printing in January 1993
Print Quantity 1-500
Price 5.00 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn1661_ /
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