General
Type DG pump is single-suction, multi-stage, segmental centrifugal
pump. It is used for feeding water of low-middle pressure boiler as
well as pumping high lift water of factory and city.It is provided
for delivering clear water or other liquid which is physically and
chemically similar to clear water.The temperature of the liquid for
type DG85—80 and 200DG43 pump is -20℃ ~ 150℃, the temperature for
the liquid for the others usually is -20℃ ~ 105℃. The maximum inlet
pressure is not allowed more than 0.59Mpa ( 6kgf/cm2 ).
Performance range
Capacity Q6~ 346m3/h
HeadH102 ~ 1056m
Description of pump type
Example 1DG25—50×3
DGSingle-suction, multi-stage, boiler feed water pump.
25Pump capacity ( m3/h ) .
50 —Single-stage head of pump ( m ).
3pump stage number.
Example 240DG1403.
40inlet diameter of pump ( mm ).
DGSingle-suction, multi-stage, boiler feed water pump.
140— Single-stage head of pump ( m ).
3pump stage number.
Construction
The inlets and the outlets of all type DG pumps are vertical
upward. The axial force gets balanced with the help of balance
disk. The shaft seal usually uses packing seal or mechanical seal.
Type Dg85—80, Dg85—67 and Dg155—67 pumps use sliding bearings which
get lubricated with dilute-oil. The others use rolling bearings .
The direction of rotation
The rotation of the pump rotor is clockwise looking from the motor
to the pump.
The material of main parts of the pump
The medium-contacting parts are made of cast iron except that of
type Dg85—80 and type 200DG43 pumps are cast steel.
Complete provision range
pump, motor, check valve, sluice valve and common bedplate or pump
bedplate.
Please give indication of the material of main parts of pump in
contract. If you have any special requirement, please contact us
without hesitation.
