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Changzhou Junqi International Trade Co.,Ltd
Changzhou Junqi International Trade Co.,Ltd

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Home ProductsBrushless DC Water Pump

Coolant Additional Auxiliary Electric Water Pump

Coolant Additional Auxiliary Electric Water Pump

  • Coolant Additional Auxiliary Electric Water Pump
  • Coolant Additional Auxiliary Electric Water Pump
  • Coolant Additional Auxiliary Electric Water Pump
  • Coolant Additional Auxiliary Electric Water Pump
Coolant Additional Auxiliary Electric Water Pump
Product Details:
Place of Origin: China
Brand Name: junqi
Certification: IS9001, TS16949,CE
Model Number: DKB80
Payment & Shipping Terms:
Minimum Order Quantity: 5 sets
Price: Negotialbe
Packaging Details: suitable for export
Delivery Time: base on order,
Payment Terms: T/T, Western Union, Paypal
Supply Ability: 1000set/month
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Detailed Product Description
Model: DKB80 Seris Material: Aluminium Alloy
Voltage: 24VDC /12VDC Power: 80W
Rated Flow Rate: 1800L/H Max Head: 10M
Application: Hybrid Bus, Electric Vehicles Theory: Centrifugal Pump
Usage: Coolant
High Light:

24v Dc Electric Water Pump


Coolant Electric Water Pump


PWM Brushless DC Motor Water Pump

12v/24 Dc Coolant Additional Auxiliary Water Pump Electric Water Pump For New Energy Vehicle


DKB80 Series automotive Electric water pump

Boosting/circulation/Variable-frequency/Low-noise/shield pump/PWM control/signal feedback




Apply to HEV(Hybrid Electrical Vehicle),EV(Electric Vehicles), trains, ships and other heating circulation and cooling circulation system.




♦ Single stage centrifugal pump

♦ Magnetic force transmission (shield pump structure)

♦ High efficiency brushless DC motor, low power consumption, high efficiency, long service life.

♦ With wide range operating temperature

♦ PWM signal speed controlling (optional PG signal feedback )

♦ With constant flow controlling

♦ Reverse polarity protection

♦ Dry running protection

♦ Over Voltage, over current protection

♦ Overload, over temperature protection

♦ Automobile grade electronic components


♣ Technical description (parts in contact with the liquid)

Pump head housing: PPS+GF

Impeller: PPS+GF

Shield cavity: PPS+GF

Shaft bearing: Carbon resin composite materials+ zirconia ceramic washer

Shaft: hollow stainless steel shaft

Rotor: nylon injection packed

Seal ring: EPDM


♣ Driving device (Including motor)

Driving electromagnet: magnet+nylon injection packed

Screws and nuts: SUS 304 stainless steel

Driving Motor : brushless motor

Motor wire frame: PPA+GF (white)

Pump housing: aluminum alloy

Bracket: SUS 304 stainless steel

Bracket hoop: US 304 stainless steel+ Damping rubber ring

Waterproof based on IP67 rating (en60529)

Connector:3 Pins or 4Pins (with PG signal feedback)

Nozzle diameter:22.6mm (inner diameter:16mm)


♣ Model Specifications




With mounting bracket model suffix : SR (e.g:DKB80-12ASR)

With PG signal feedback pin model suffix:PG (e.g:DKB80-12APG)


♣ Mounting instruction

DKB80 series pumps are centrifugal pumps which require pre-filled,

The pump installed in the lowest position of the system to ensure that the impeller is always immersed in the liquid, or pre-filled the pump before power on .


1: Pump should not be dry-running, even though it can dry-running for 30 seconds (after 30 seconds dry-running, it will automatically stop), Dry running will makes noise, also increasing abrasion to the shaft and shaft sleeve.


2: Use the recommended diameter pipe connecting the pump inlet, if you use a smaller diameter hose pump inlet, Due to the negative pressure in the pump, the outside air easier enter to the pump through the pipeline, it will make the pump performance degradation, and also the air bubbles make damage to the pump.


3: As viewed from the pump inlet direction, the impeller rotates clockwise (see the arrow on the outlet port).


4: The pump can be installed vertically or horizontally mounted (see figure 1 ) When installed vertically, the outlet port should be upward .


5: In order to avoid the dry- running (air get stuck in impeller),the water pump outlet port should be vertical or in the upper of the impeller. (see figure 1 )


6: The connected pipe should be vertically mounted (or no elbow in 20cm )to make the air discharged easily, the outlet pipe should not be used less than 90 degrees

Elbow (see figure 2).


7: Do not use the seawater or other heavy pollution with big grain impurity liquid as the liquid medium .


Coolant Additional Auxiliary Electric Water Pump 1


♣ Temperature parameter

Medium liquid temperature: -40℃ to +120℃ (-40°F to + 248°F)

Working ambient temperature: -40℃ to +100℃ (-40°F to +212°F)

Storage temperature: -40℃ to +70℃ (-40°F to +158°F)

(up to 100 ℃, but it will shorten the service life)


♣ System pressure

-0.2 to 2.5 bar ( 100℃ (212°F).

The service life is more than 20,000 hours based on the rated voltage and 36℃(86°F) ambient temperature.


♣ Voltage range

Rated 12V water pump, workable range 9V - 16V

Rated 24V water pump, workable range 18V - 30V

Although the motor can be used in a wide range of voltage and temperature, but excessive or too low voltage and temperature will affect the service life of the motor, the pump can not be exposed to thermal radiation ambient.


Medium liquid: pure water, liquid mixture (Water with below 60% glycol)


♣ Electrical parameter

Working Voltage (VDC) Rated Power (W) Max Flow (L/H) Max head (M) Weight (g)
9V-16V(12V) 80W 1800L/H 10M 750g
18V-30V(24V) 80W 1800L/H 10M 750g

♣ Connector model and Pins

3 PIN connector   Pin 1 Pin 2 Pin 3  
  174357-2 +12V/+24VDC PWM GND  
4 PIN connector   B+ (4) SWP(3) NWP(2) GND(1)
Matched connector model 7283-7449-30 +12V/+24VDC PWM Signal feedback GND

3 pin 4 pin.jpg


♣ Recommend wire size (based on 3% voltage drop)

Wire thickness Max wire length
  12V 24V
1.5 mm² --- 16m
2.5 mm² 6.3m 25m
3 mm² 8m 31m
4 mm² 10m 40m

♣ Attentions

1. Working ambient temperature:-40℃--120℃, should try to avoid close to three-element catalytic, gas discharge pipe system and engine during the installation, ensure the working environment temperature.

2. The installation position of the water pump should as much as possible close to the low water level, to extend the service life of the pump.

3. In order to reduce water resistance, should as much as possible to reduce the number elbow in piping in the installation, ensure no any elbow within 20 cm from the pump.

4. Please use the pump far from the dusty environment, the dust is harmful to reduce the service life

5. Pay attention to the purity of the water, avoid to jam and impeller-blocked to reduce the service life of pump.


♣ Curve chart

Coolant Additional Auxiliary Electric Water Pump 3

♣Overall dimensions

Coolant Additional Auxiliary Electric Water Pump 4

♣ Pump structure

Coolant Additional Auxiliary Electric Water Pump 5

Coolant Additional Auxiliary Electric Water Pump 6

Contact Details
Changzhou Junqi International Trade Co.,Ltd

Contact Person: Ivanzhu

Tel: 0086-13961407941

Send your inquiry directly to us
Changzhou Junqi International Trade Co.,Ltd
No.28 Shunyuan Rd, Changzhou City, JIangsu, China
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