This standard specifies the types and basic parameters of small multistage centrifugal pumps. This standard is applicable to pumps that convey clean water or hot water below 120°C or slightly corrosive liquids, and whose maximum suction flow force is not greater than 0.3MPa. JB/T 6435.1-1992 Types and basic parameters of small multistage centrifugal pumps JB/T6435.1-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Small Multistage Centrifugal Pump
Type and Basic Parameters
1 Subject Content and Scope of Application
This standard specifies the type and basic parameters of small multistage centrifugal pumps (hereinafter referred to as pumps). JB/T6435.1-92
This standard applies to pumps with the conveying medium being clean water or hot water below 120℃ or slightly corrosive liquids, and the maximum suction pressure not exceeding 0.3MPa.
2 Reference Standardswww.bzxz.net
GB3216 Test Methods for Centrifugal Pumps, Mixed Flow Pumps, Axial Flow Pumps and Vortex Pumps 3 Types and Basic Parameters
3.1 Structural Type
The pump is divided into 3 structural types:
Multistage horizontal pump;
Multistage vertical pump;
Multistage pipeline pump.
According to the requirements of the conveying medium for the material, the pump is divided into ordinary type and all stainless steel type. 3.2 Basic parameters
The basic parameters of the pump shall comply with the provisions of the table. The basic parameters in the table are the values ​​of the specified points when the water is clean at room temperature. 3.2.1
3.2.2 The working range of the pump is shown in the figure. The performance range of the pump at the specified point: flow rate 1.6 ~ 25m*/h, head 16 ~ 150m. 3.2.3 The performance deviation of the pump shall comply with the provisions of GB3216C. 3.3 Model Indication Method
3.3.1 Horizontal Pump
All stainless steel type is indicated by F
(Ordinary type is not indicated)
Single-stage head, m
Suction diameter, mm
Small multistage horizontal pump
Example: Suction diameter 40mm, head 16m, all stainless steel small multistage horizontal pump: DW40-8X2-F
Approved by the Ministry of Machinery and Electronics Industry on July 20, 1992 and implemented on January 1, 1993
3.3.2 Vertical Pump
JB/T6435.192
All stainless steel type is indicated by F
(Ordinary type is not indicated)||t t||Single-stage head, m
Suction diameter, mm
Small multistage vertical pump
Example: Suction diameter 40mm, head 16m, ordinary small multistage vertical pump: DWL
40-8×2
Pipeline pump
All stainless steel type is represented by F
(ordinary type is not represented)
Single-stage head, m
Suction diameter, mm
Small multistage pipeline pump
Example: Suction diameter 40mm, head 16m, all stainless steel small multistage pipeline: DWG40-8X2-F
4 Pump direction
From the drive end, the pump rotates clockwise. 2 | | tt | 11
25-8 × 12 | | tt | | 25-8 × 13 | | tt |
32- 8 × 5 | | tt | | 32-8 × 6 | 32-8×15| | tt |
40 -8×9
40-8×10
40-8×11
40-8×12
40-8×13
40-8×14
40-8×16
40-8×17
40-8×18| |tt||JB/ T6435.1-92
Pump performance parameter table
NPSH
(NPSH)r
Shaft power
Specific speed
50-12×2
50-12×3
50-12×4
50-12×5
50-12×6|| tt | ||65-12× 5
65-12×6
65-12×7
65-12×8
65-12×9
65-12×10
65-12×11
65-12×12
25~8×18
25-8×2
JB/T 6435.1-92
32-8×18-
32-8×2
Pump working range diagram
NPSH
(NPSH)r
Shaft power
Specific speed
50m*/h
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