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 200DG 43 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 Q: 6 ~ 346m3/h
Head H: 34 ~ 1056m
The description of pump type:
Example 1 DG25-50 x 3
DG -Single-suction, multi-stage, boiler feed water pump.
25 -Pump capacity (m3/h)
50 -Single-stage head of pump (m).
3 -pump stage number.
Example 2 40DGI40 × 3.
40 - Inlet diameter of pump (mm).
DG -Single-suction, multi-stage, boiler feed water pump.
140-Single-stage head of pump (m).
3 -pump stage number.
It’s used in type 40DGI40, 80DG20, 100DG20, 150DG20, 150DG30, and 200DG43.
Example 3 DG80-30 x 3.
DG - Single-suction, multi-stage, boiler feed water pump.
80 - Inlet diameter of pump (mm).
30 -Single-stage head of pump (m).
3 -pump stage number.
This is only for DG80-30.
Construction:
This kind of pump is horizontal installed centrifugal pump. The inlet and outlet of the pump are both vertical. The pump mainly consists of suction casing, stage casing, diffuser vane, delivery casing, stuffing box, bearing box and rotor elements. The rotor elements mainly consists of shaft, impeller, sleeve, bearing bush and balance disk, the parts that are assembled on the shaft are fixed with key and sleeve nuts. DG85-80, DG85-67, DG155-67 adopt sliding bearing which get lubricated with dilute oil. Others use cylinder roller bearing which get lubricated with grease except type 80DG20, 100DG20, 150DG3 and 200DG43 use dilute oil. All the pumps are supported by feet except DG85-80 and 200DG43 by pump center. Pump and motor are connected with flexible coupling.
Pump axial thrust are balanced by the balancing system in pump, which consist of balance ring, balance disk, balance bush and balance water pipe.
Shaft seal can be packing seal or mechanical seal (single end surface, non-balanced type). Customers oneself choose it.
The direction of rotation
The rotation of the pump rotor is clockwise looking from the motor to the pump.
Can be deliver by sea or by air as customers' requirements.
Company Information
Changsha Fusi Water Pump Industry Co., Ltd, established in 1997, is a specialized pump manufacturer. Now we have 47 series of pump products, 646 varieties of types, 2086 kinds of specifications. Main products: DG type industrial bolier feed pump, S/SA/SAP type single-stage double-suction horizontal split centrifugal pump, IS type single-stage single-suction centrifugal pump, IH type single-stage single-suction chemical centrifugal pump, N/NB/GN type condensate pump, single-stage, two-stage, multi-stage centrifugal oil pump. All pumps sell well all over the country and overseas countries and regions. Applied in energy, mining, metallurgy, petroleum, chemical, building materials, textile, urban construction, marine development, farmland irrigation and drainage, national defense construction.
FAQ1. Q: Are you a manufacturer or trading company? A: We are a professional pump manufacturer since 1997. 2. Q: How to send a inquiry to you? A: If you have the specifications, just send to us, we will help to choose the type. If you only know the model type, also just need to send it to us to get the best offer.
3. Q: How to manage your quality? A: Each procedure is strictly controlled, and we have the computer-automatically quality checking system. Each pump will be checked before delivery.
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