Singularity Computers Protium Reservoir

39.99 54.99 

Protium is designed for enthusiasts who want to enjoy building systems with the freedom to create something individual.

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Protium is a set of components for creating pump and reservoir combinations that increase performance, mounting options, and flow inlet/outlet options and will be a feature in your build. We set out to create the most minimalistic and compact components, but at the same time provide the most options and compatibility. Our components are refined in ways only possible due to our 15 years of experience in liquid cooling. Each component is carved from a solid block of material in a CNC mill. Creating our different finishes, frosted and polished acrylic is unique and takes a lot of effort to manufacture. Protium is designed for enthusiasts who want to enjoy building systems with the freedom to create something individual.

Protium Reservoir:

Protium reservoirs have 7 ports for maximum loop design options. On one end is a low profile three port cap and on the other end a 90-degree quad port cap. Protium has an aluminum retention ring design allowing the caps to be rotated 360 degrees to face any direction. The retention ring design also increases durability as it supports the acrylic reservoir tube thread. There is no acrylic on acrylic thread and the o-rings surface does not rotate on the o-rings which maximizes the lifespan of the o-rings. We use our own specially developed clear silicon o-rings to match our acrylic components and for the higher ‘set point’ resistance of silicon. The quad-port cap on the acrylic version has two 3mm LED positions to create a lighting feature.


Vastly increases inlet/outlet and loop design options.

Inlet/outlet positions at 90 degrees for a cleaner loop.

Caps can be rotated to face any direction.

No acrylic on acrylic threads.

O-ring surfaces do not rotate on the o-ring.

CNC milled Acrylic or Acetyl from a solid block.

CNC lathed aluminum retention rings.

7 ports. 3 port low profile cap and quad-port 90-degree cap.

Just two components to create a full pump and reservoir combination.

Caps Material/Finish Options: Acrylic, Frosted Acrylic, Black Acetyl.

Retention Ring Color Options: Black, Silver.

3mm LED mounting positions on both caps.

The frosted acrylic version acts as a light diffuser.

Can be used standalone or with our pump components.

16mm hardline compression fittings fit side by side and on all ports directly.

Included Items:

60mm Acrylic Reservoir Tube (External Threads).

Aluminum Retention Rings: x2.

90 Degree Quad Port Cap.

Triple Port Cap.

16mm Internal Acrylic Flow Tube.

G1/4” Stop Fittings: x5.

Silicon O-rings x2.

Create a Combo:

To create the Protium D5 Pump and Reservoir Combo you need:

Protium D5 Pump Top.

Protium D5 Pump Cover

Protium Reservoir.

D5 Pump (Any Standalone D5 Pump)


D5 Pump & Reservoir Combos (Full assembly including Quad Port. For SC Stop fitting add 5mm):

100mm = 210mm

150mm = 260mm

200mm = 310mm

250mm = 360mm

300mm = 410mm

350mm = 460mm

Our Protium reservoirs work perfectly with Ethereal and Core Reservoir Mounts.

Weight: 0.366 kg

Dimensions: 18.5 × 9 × 9 cm

Additional information


Black Acetal, Black Frosted, Black Polished


100mm, 150mm, 200mm, 250mm


Singularity Computers

Singularity Computers provides custom-built PC, PC Rebuild & upgrade, case mods, custom-built components, and custom cases.
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