Alphacool Core 70 Tube Reservoir with VPP/D5 Apex PWM Pump (13742) - Tube reservoir and D5 Apex PWM pump combination

Alphacool Core 70 Tube Reservoir with integrated VPP/D5 Apex PWM pump is a compact reservoir-pump combination designed for custom PC liquid cooling loops. The unit pairs a 70 mm transparent tube-style reservoir with a VPP/D5 Apex PWM-controlled pump, providing circulation, fill and drain capability in a single component. It is intended for use in systems where space is limited but reliable pump control and visible coolant level are required.

Advantages

The integrated design reduces the number of separate components to mount and plumb while maintaining the performance characteristics of a D5-class pump with PWM speed control. The tube reservoir offers a clear view of coolant level and a compact footprint that simplifies placement inside many cases. PWM control enables automatic adjustment of pump speed to balance cooling performance and acoustic output when used with compatible motherboard or fan controllers.

Suitable for

• Custom PC water-cooling loops requiring a compact reservoir and D5-class pump
• Builds with limited internal space where combined components simplify installation
• Systems needing visible coolant level and straightforward fill/drain operations
• Setups that benefit from PWM pump speed control for noise and flow management

Key specifications

• Reservoir type: tube-style, 70 mm diameter
• Pump type: VPP/D5 Apex with PWM speed control
• Integration: combined reservoir and pump unit for single-point installation
• Material: transparent tube reservoir for coolant visibility
• Mounting: designed for internal PC mounting with fittings for loop connections

How to use

Install the Alphacool Core 70 Tube Reservoir with VPP/D5 Apex PWM pump into a suitable internal location in the PC chassis where inlet and outlet tubing can reach radiators and blocks. Connect the pump to a compatible PWM header or controller for speed regulation, and attach tubing to the reservoir and pump ports using appropriate compression fittings. Fill the loop with coolant through the reservoir, bleed air until circulation is stable, then verify leak-free connections before powering on the system for extended operation.

Usage recommendations

Use appropriate coolant compatible with components in the loop and follow recommended coolant change intervals. Ensure the pump is connected to a PWM-capable header or controller to take advantage of variable speed control. Place the unit where it is accessible for filling and visual inspection of coolant level, and perform routine checks for leaks and air accumulation.