General
Type NB, NBA pumps are single-stage single-suction overhanging centrifugal condensate pumps. Type GN, GNL pumps are double-stage single-suction centrifugal condensate pumps. They are used for transferring condensate water from the condensator or the turbo-generator of 750~3000KW in power station as well as turbogenerator other liquid which is physically and chemically similar to water. The temperature of the liquid is below 80C. Inlet pressure is not allowed more than 0. 6MPa.

Performance range
Capacity Q: 11 ~ 120m3/h
Head H: 12 ~ 143m

The description of pump type
Example 1 100NB??45
100??Inlet diameter of pump (mm).
N??Condensate pump.
B??Overhanging type.
45??Designed head (m).
Example 2 GNL3??A GNL3??B
G??High head.
N??Condensate pump.
L??Vertical type.
3??Inlet diameter is 3 inches.
A, B??Diameter of impeller is changed.

Construction
Type NB, NBA, GN, N pumps are horizontal type and GNL pump is vertical type. The pumps use rolling bearings which get lubricated with grease. The shaft seal is either packing seal or mechanical seal.

The direction of rotation
The rotation of the pump rotor is counter clockwise looking from the motor to the pump.

The material of main parts of pump
The medium-contacting parts, i. E. Pump casing, cover, seal ring and shaft sleeve are made of cast iron. The material of impeller and inducer of type N pump is separately silicon brass, aluminium-ferro-bronze. The material of shaft is high-quality carbon steel.

Complete provision range
Pump, motor, coupling, check valve and sluice valve.

Please give indication of the material of main parts of pump in contract. If you have any special requirement, please contact us without hesitation.