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Why not spare your hearing with Acoustic PC’s Quiet Computer Cooling and Soundproofing
Solutions. Acoustic PC Stocks Quiet Computer Parts. Quiet PC Fans, Quiet CPU Coolers, Quiet
Power Supply, Quiet Computer Cases, PC Sound Dampening insulation, Ant-vibration Noise
Reduction materials such as Silicone Fan Mounts, Sorbothane Feet for Ultra Low noise PC's. We
also sell Silent PC Hardware components and Gaming products such as Fanless Silent Video
cards, SSD Drives, Professional Gaming peripherals for serious Gamers. Audio products & more.
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Koolance PMP-400 DC Water Pump
Laing DDC / Koolance PMP-400 DC Water Pump


This is now the best DC powered pump available for the computer watercooled industry in 3/8 OD.
The two best water pump manufactures LAING and DELPI badged under the Koolance name and come togeather to design a small quiet yet powerfull 3/8 OD
Water pump solution. This pump lasts longer, consumes less power and offers superior performance characteristics when compared to other pumps in its class.

Design Characteristics
The pump electronically commutated wet rotor design results in only one moving part in the entire pump. A spherically suspended rotor/impeller rests on top of a
ceramic ball and is driven magnetically, thereby eliminating the need for a shaft motor connection. The pump lasts longer, consumes less power and offers
superior performance characteristics when compared to other pumps in its class.
Dimensions Diagram
Flow Rate Chart
Flow Rate Chart
The PMP-400 is a high-pressure pump with a very low profile format.

• Maximum Flow Rate: 7.5 L/min (1.9 gal/min)
• Maximum Head Pressure: 5.5m (18ft)
• Motor: Brushless DC, electronically commutated, spherical motor
• Power Consumption (at max): 20W
• Voltage Range: 8 to 13.2 VDC
• Startup Voltage: 9 to 13.2 VDC
• Maximum System Pressure: 1.5 kgf/cm2 (22 PSI)
• Maximum Temperature: 60°C (140°F)
• Electrical Connector: 3-pin fan header with tachometer speed signal
• Tachometer: Open collector, max 20mA/24V, 2 pulses per revolution
• Hose Connections: 10mm (3/8") ID hose barbs
• Wetted Materials: PPO, Carbon/Allumina Ceramic, EPDM or Viton, 316 SS or Plastic.
• Noise: Less than 40dBA
• Weight: 198g (7oz)
• MTBF 50k hours


General
Weight 0.50 lb (0.23 kg)

Materials
Wetted Materials PPO, Carbon/Allumina Ceramic, EPDM or Viton, 316 SS or Plastic

Pump
Expected Lifetime 50,000 hrs. MTBF
Max Flow Rate 7.5L/min (1.9GPM)
Max Power 20W
Max Static Head 5.5m (18ft)
Max Temperature 60°C (140°F)
Native Hose Connection Barbs for ID 10mm (3/8in)
Speed Knob  
Tachometer yes
Type Magnetic Centrifugal
Voltage 8-13.2 VDC
Dimensions Diagram
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Laing DDC / Koolance PMP-400 DC Water Pump