This standard applies to axial suction centrifugal pumps with a maximum working pressure level of 16 bar. This standard is equivalent to the international standard ISO 2858-1975 "Axial suction centrifugal pumps (16 bar level) - marking, rated performance points and dimensions". GB/T 5662-1985 Axial suction centrifugal pumps (16 bar) marking, performance and dimensions GB/T5662-1985 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Axial Suction Centrifugal Pumps (16 bar)
Marking, Performance and Dimensions
End-suction centrifugal pumps (rating 1e bar)-Designation, nominal duty poit and dimensionsUDC 621.67:389
.68/.64
GB 5862-85
ISO2858-1975
This standard applies to axial suction centrifugal pumps with a maximum working pressure level of 16 bar*. This standard is equivalent to the international standard ISO2858-1975 "Axial Suction Centrifugal Pumps (16 bar Class)-Marking, Rated Performance Points and Dimensions".
Note: The working pressure is the discharge pressure of the pump within the allowable working range, including the suction force. 1 Marking
The marking of the pump consists of a number. The first part indicates the diameter of the suction port, the second part indicates the diameter of the discharge port, and the third part indicates the nominal diameter of the impeller.
Marking example:
A centrifugal pump with a suction port diameter of 80mm, a discharge port diameter of 50mm, and a nominal impeller diameter of 250mm is marked as 80~50-250. 2 Performance and size
The design point performance and overall dimensions of the pump shall comply with the provisions of Figure 1 and Table 1. For shapes and dimensions not specified, the drawings approved by the prescribed procedures shall prevail.
The threaded holes of all pipe fittings shall be manufactured in accordance with the non-threaded sealing pipe threads in Appendix C (reference) of GB5657-85 "Technical Conditions for Single-stage Single-suction Clean Water Centrifugal Pumps".
The direction of rotation of the pump is clockwise when viewed from the drive end. The recommended range of flow and head is shown in Figure 2. The limit deviation of the overall dimensions of the pump shall comply with the provisions of Figure 3 and Table 2. 9 Hydrostatic test
The hydrostatic test pressure should be 1.5 times the working pressure, but not more than 24bar. The relationship between the cold test pressure and the hot working pressure should be discussed by the manufacturer and the user.
+ 1 bar=0.1MPa.
National Bureau of Standards 198511-25 Issued
1986-09-01 Implementation
GB 5662-85
Each # port
Liquid hole A: The pipe joint for cold or hot liquid is 3/8*Liquid hole B, and the liquid hole of the stuffing box should be as large as possible, but not more than 1/2*. Figure 1
Table 1 Performance and size
Scale mark!**
Design point performance
1450r:min
2900r/min
8038511
8010000
125125wwW.bzxz.Net
32100385
132160
160180
180225
200250
132160
225280
Discharge outlet diameter
寸mn
180140
100170
190110
320250
210160
240190
212110
320250
345280
240190
345280
Dimension mark**
Design point performance
1450r/min2900r/min
Experience home
GB 5662—85
Continued Table 1
180225
200250
530225280||tt ||50125500|200
1405803
280212
6512595
8 0160120
160120
160120
360280
400315||tt ||320250
345280
400315
435355
360280||t t||315110370
355100
200150
80160120
140530
315400
530280375
670315
100200
400315
150500400
110370
500|400110|370
400100200
To, the inlet diameter is 125mm, the outlet diameter is 80mm, and the distance required to withdraw the rotor to the drive side is not required. * Flange pressure rating is 16 bar.
.**These flow rates are taken from both.
110140
110180
GB566285
(9/E)0
im/ausft =u
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Additional remarks:
GB 5662—85
Table 2 Limit deviations of pump dimensions
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by the Shenyang Pump Research Institute. The drafter of this standard was Huang Yuying.
112200
h,+ h?
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