Water pump models and their meanings

The water pump model consists of three parts, and the meaning of each part is as follows:

(1) The first part consists of numbers: indicating the diameter of the suction pipe reduced to 1/25 or the diameter of the suction pipe in inches.

(2) The second part is composed of pinyin letters: indicating the type (structure) of the water pump, among which:

Type B——Single-stage, single-suction, cantilever centrifugal water pump.

SH type——Single-stage, double-suction, split-casing centrifugal water pump

SN type——Double-suction condensate pump.

DG type - electric water supply pump.

SD type——Multi-stage low-speed deep well pump.

ZLQ type——Vertical axial flow pump.

DN type——single-suction condensate pump.

(3) The third part is composed of numbers: generally it represents the specific speed reduced to 1/10 and converted into an integer; some represent the outlet pressure of the water pump P (Mpa) head H (m.H2O) flow rate Q (T/H) And the number of impeller stages and so on.

For example:

3 B 9

│ │ └─── Specific speed = 90

│ └───── Single-stage, single-suction, cantilever centrifugal water pump

└─────── Suction pipe diameter is 3" or 75mm.

18 Sh 20

│ │ └── Specific speed = 200

│ └───── Single-stage, double-suction, split-type centrifugal water pump

└─────── Suction pipe diameter is 18" or 450mm.

18 N L--140

│ │ │ └─ Lift = 140 meters water column (m.H2O)

│ │ └─── Vertical

│ └───── Condensate pump

└─────── Suction pipe diameter is 18" or 450mm.

DG 270－150

│ │ └─Outlet pressure is 150MPa

│ └────The flow rate is 270T/H

└───── Multi-stage boiler feed water pump

2GC 5×4

│ │ │ └─ 4-stage impeller

│ │ └─── Specific speed = 50

│ └───── Multi-stage, single-suction, segmented centrifugal water pump

└─────── Suction pipe diameter is 2" or 50mm.

  72 K L X C－26

  │ │ │ │ │ └─Design point head

  │ │ │ │ └───Rate of RPM

  │ │ │ └────The water suction port is under the base layer

  │ │ └─────vertical water pump

  │ └──────Rotor extractable type

  └────────Suction port diameter