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Small black cylindrical G1/4 fitting with knurled edges

Thermaltake

Thermaltake CL-W086-CU00BL-A Pacific G1/4 Pressure Equalizer Stop Plug Black

SKU CH-B5YG-NEZ85

G1/4 pressure equalizer stop plug with O-ring, 18.00 x 12.90 mm, copper construction, 12.00 g weight

  • Product typeFittings
  • Product colorBlack
  • Key featuresDimension: D18 × 12.9 mm Applicable: G1/4 in Weight: 12g Mat
  • Pressure equalisation protects loop integrity with built-in valve
  • G1/4 thread fits standard water-cooling ports directly
  • Compact 18.00 mm diameter suits tight build spaces
  • Brass construction resists corrosion for long service life
  • Light 12.00 g weight adds minimal mass to assembly

Pressure Equalizer Stop Plug G1/4

The Thermaltake Pacific G1/4 Pressure Equalizer Stop Plug in black is a copper fitting designed for custom liquid-cooling loops. It provides a sealed G1/4 thread port that balances internal pressure while preventing coolant leakage. The compact D18.00 x 12.90mm body weighs 12.00g and includes an O-ring for a secure seal.

Builders needing pressure relief in sealed loops

This plug suits builders assembling custom water-cooling systems who require a dedicated pressure-equalization point on a reservoir or radiator port. It is not intended for users seeking a standard open port, a fill port, a drain valve, or a rotary adapter, as it serves a single fixed sealing function.

Hand-tighten into any G1/4 port

Installation is straightforward: thread the plug into any female G1/4 opening until the O-ring seats, then snug by hand or with a light turn of a wrench. Over-tightening can strip the copper threads or deform the O-ring, causing leaks. Ensure the mating surface is clean and free of debris before fitting.

How it compares

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Price $5.99
Cheaper than about 92% of the 609 comparable items (median $15.99).

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Specifications

Product
Brand nameThermaltake
Model nameCL-W086-CU00BL-A
Product typeFittings
Product colorBlack

Questions about this item

Which thread size must my water-cooling component have to accept the G1/4 pressure equalizer stop plug?

The component needs a G 1/4 female thread; the plug screws directly into any standard G 1/4 port.

Will the 18.00 mm diameter head clear the tubing or fittings already installed on my radiator?

The head measures 18.00 mm across and 12.90 mm tall, so check the gap around your existing G 1/4 ports before fitting.

How can I confirm the O-ring is sealing once the plug is tightened?

After installation, run the loop under pressure and watch for bubbles or moisture at the plug; a dry joint means the O-ring is sealing.

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