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White cylindrical reservoir with black end caps, 240mm length

PrimoChill

PrimoChill CTR Hard Mount 240mm White POM Reservoir TX Matte Black

SKU CH-RE4B-ZC19G

A hard-mount reservoir with 240mm tube length, 57mm inner diameter and G 1/4 ports

  • TypeReservoir
  • Compression-ring end caps seal without cutting acrylic tube
  • 240 mm reservoir length fits standard radiator spacing
  • G 1/4 threads accept common water-cooling fittings
  • 25 in inner diameter supports high flow rates
  • Includes four low-profile port caps and two three-port end caps

240 mm Compression-Tube Reservoir

The PrimoChill CTR Phase II is a hard-mount reservoir built from laser-cut acrylic tube with a 240 mm body length. Compression-ring end caps create a watertight seal without cutting or tapping the tube, removing the risk of stress cracks. White POM end caps and a TX matte-black finish give modders a two-tone look that fits colour-themed custom loops.

Replaces Threaded End-Cap Reservoirs

Traditional reservoirs rely on threaded acrylic ends that must be drilled and tapped, a process that can weaken the tube. The CTR’s compression rings seal on the outer diameter using the same principle as PrimoChill rigid fittings, so the upgrade is worth it when you want tool-less assembly and a cleaner interior without visible threads.

Fits G 1/4 Loop Components

Each end cap accepts standard G 1/4 fittings and the kit includes four low-profile port caps with O-rings plus two three-port mountable end caps. The 57 mm inner diameter and 63 mm outer diameter match common 2.5-inch tubing sizes, while the 278 mm overall length (including the 38 mm cap allowance) determines the vertical space you must allocate in the chassis.

Highlights

  • Compression-ring end caps seal without cutting acrylic tube
  • 240 mm reservoir length fits standard radiator spacing
  • G 1/4 threads accept common water-cooling fittings
  • 25 in inner diameter supports high flow rates
  • Includes four low-profile port caps and two three-port end caps

Specifications

TypeReservoir

Questions about this item

What tube inner and outer diameters does the 240 mm CTR reservoir accept?

The reservoir uses 57 mm inner and 63 mm outer diameter acrylic tubes.

How do the compression-ring end caps seal the reservoir, and what common mistake should I avoid?

The end caps compress an O-ring against the tube without cutting or tapping it; over-tightening can crack the acrylic.

Which wear items will need replacement after extended use?

The O-rings on the four low-profile port caps and two three-port end caps should be inspected and replaced if they degrade.

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