JB/T 2001.20-1999 Water system centralized air release valve core (PN=31.5MPa)

JB/T 2001.20-1999 This standard is a revision of JB 2020-84 "Centralized Air Release Valve Core of Hydraulic Press (Pg=315×100000Pa)". This standard specifies the type, size and technical requirements of the centralized air release valve core. This standard is applicable to the centralized air release valve core used in various high-altitude and underground working cylinders, pipelines, etc. with a nominal pressure of 31.5MPa and inconvenient upper and lower operations during decentralized air release. This standard was first published on January 1, 1984. JB/T 2001.20-1999 Centralized Air Release Valve Core of Water System (PN=31.5MPa) JB/T2001.20-1999 Standard download decompression password: www.bzxz.net

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Standard of the Machinery Industry of the People's Republic of China
JB/T 2001.1~2001.74—1999www.bzxz.net
Water system assembly and parts1999-06-28 Issued
National Bureau of Machinery Industry
2(-01-U1 Implementation
Standard of the Machinery Industry of the People's Republic of China
Water system centralized air-release valve core
Water system-C'ore of niuuifokt air-eseape vulve( PN=31.5 MPa J
International consumer stipulates the type and size of centralized air-release valve core. This technology does not require it. JB/ 2001.20-1999
Generation.TRn20-81
This international standard is used for nominal pressure 31.5MPa, and is used for various commercial and ground-based cylinders and buttocks that are inconvenient to operate when dispersing and releasing air.
2 Type and size
The type and size should comply with the provisions of:
1-valve: 2-pipe: 3-lubricant: 4-guide: 5-shaped mesh: 6-shaped mesh to Figure 2
National Machinery Industry Bureau approved 20001 on June 28, 1999
3 Technical requirements
JB7T2001.20--19
3.1 Nominal 3:.5MPa, test pressure 42MPa nominal IK7GMP: test sequence is 37 MPa. 7.2 Use algae oil to check the connection of the valve pin, and keep the oil plate at 5m to ensure that there is no leakage. 3. The test liquid should be consistent with the working liquid, and the pressure should be maintained at [m. There should be no seepage and music at the lubrication ports of each rate lever. 1.4 The middle venting center air port is equipped with 14×3mm or 22×6mm in the pipe, and the exhaust port is equipped with 1/1 pipe 4 ladder record example
Centralized air valve core:
Chongqi Business 1B/2001.201999
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