JB/T 6495-1992 Valve structural elements Gate (or valve disc) T-slot dimensions JB/T6495-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 6495-1992
Valve Structural Elements
Size of T-slot of Gate (or Valve Disc)
Published on December 25, 1992
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on July 1, 1993
Mechanical Industry Standard of the People's Republic of China
Valve Structural Elements
Size of T-slot of Gate (or Valve Disc)
1 Subject Content and Scope of Application
This standard specifies the structural type and size of T-slot of valve gate (or valve disc). JB/T6495-1992
Replaces JB1697-75
JB1731-75
This standard applies to forged steel gate valves, stop valves and throttle valves; ductile iron and cast steel gate valves, and gray cast iron gate valves. 2 Types and sizes
2.1 For forged steel gate valve discs with nominal pressure Px4.0 and 16MPa and nominal diameter D~15~40mm; forged steel stop valves and throttle valves with nominal pressure P~4.0 and 10MPa and nominal diameter D~10~25mm and nominal pressure P16MPa and nominal diameter D~15~40mm. The structure of the valve disc T-slot is shown in Figure 1, and the dimensions are as specified in Table 1. Nominal pressure pNMPa
Valve stem thread
Stop valve
Throttle valve
Stop valve
Throttle valve
Nominal diameter DN
Approved by the Ministry of Machinery and Electronics Industry on December 25, 199216
Implementation on July 1, 1993
JB/T6495-1992bzxZ.net
2.2For nominal pressure P%1.6~16MPa, nominal diameter D~50-500mm ductile iron The structural type of the gate T-slot of the gate valve is shown in Figure 1, and the dimensions are as specified in Table 2.
Stem thread
50, 65
125, 150
Nominal pressure N
Nominal diameter D
50, 65
The structural type of the gate T-slot of the cast steel gate valve with nominal pressure pn1.6~6.4MPa and
nominal diameter D50~300mm is shown in Figure 22.3
, and the dimensions are as specified in Table 3.
Valve stem thread
Nominal pressure N
1.6，2.5
Nominal diameter D
JB/T6495-1992
The structural type of gray cast iron gate valve for nominal pressure Pn1.0MPa,
nominal diameter Dz50~450mm is shown in Figure 3, and the dimensions are in accordance with the provisions of Table 2.4
4.
Valve stem thread diameter
Additional instructions:
JB/T6495-1992
This standard was proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry. H
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 Zhang Huayou, Hong Miancheng, Lu Peiwen, and Wang Jingxi. 14
People's Republic of China
Mechanical Industry Standard
Valve Structural Elements
Gate (or Valve Disc) T-Slot Dimensions
JB/T64951992
Published and Distributed by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Sheet 1/2
Format 880×1230
Word Count 8,000
First Edition in February 1992
First Printing in February 1992
Print Quantity 1-500
Price 1.00 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661_6t9 /
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