JB/T 2205-2000 JB/T 2205-2000 Pressure reducing valve structure length JB/T2205-2000 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T2205-20H0
Reducing pressure valve
Face-to-face dimensions
2U00-04-24 Issued
State Machinery Industry Bureau
2000-10-01 Implementation
JB/2205—20
This standard is the revision of the JB/2205—20
. The original standard is revised as follows: The main differences between this standard and JB/2205—20
are as follows: 1. The nominal lift of valve 1 is 1.6MPa and 2.5MPa, and the nominal diameter is DN200, DN250, DN30U, etc. The station length is 550, 600mm, and the leakage structure can be selected. Select the appropriate structure length. 2. Make appropriate adjustments to the structure length tolerance and reduce it by (0.3-0.5) mm. This standard replaces 2205-77 from the date of this standard. This standard will be submitted to the National Standardization Technical Committee for approval. The minor revision units are: Shenyang Yanmen Research Institute and Shanghai General Research Institute. The main revision persons of this standard are: Zheng Yunhai and Kong Tilong. Scope
Machinery Industry Standards of the People's Republic of China
Pressure Structure Length
Redueing pressare Velve
Face-lo-facedimensions
This standard strictly specifies the structural length of flange-connected metal valves. JB/2205-2000
This standard is applicable to nominal pressure PN1.0~6.4MPa, nominal diameter DN20~300mm: ". Operating temperature ratio 1425:1 industrial valves. The staggered length of the reverse-connected filter valve can refer to the technical standard for quick operation. 2 Terms
Structural length: The distance between the two perpendicular magnetic channel axis planes of the valve body, 3 Dimensions and tolerances
3.1 Structural length is specified in Table 1.
Nominal diameter
Structural average length is specified in Table 2.
Approved by the State Machinery Industry Bureau on April 24, 2000 to
Nominal quality PNMPs
1 6 and 2.5
Structural length
4.0 and 6.4
20(00-10-01 implementation
140-2l
220-300
310-400
450-550
56--65G
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JB/T 2205—2000
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