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Small chrome-plated brass barb fitting for 3/8 inch tubing

Thermaltake

Thermaltake CL-W040-CU00SL-A DIY cooling 3/8" ID G 1/4 chrome fitting

SKU CH-WSH3-SX2ZP MPN CL-W040-CU00SL-A

Chrome-plated brass fitting with G 1/4 thread and 3/8″ ID for custom liquid-cooling loops

  • TypeFittings
  • FeaturesDimension: ?22 x 26 (H) (mm) Applicable: ID : 3/8”( 9.5 mm )
  • Leak-free high-flow design ensures reliable liquid cooling
  • Chrome-plated brass construction resists corrosion and looks clean
  • Standard G 1/4 thread fits most water-block ports
  • Pre-installed O-ring speeds up assembly with no extra parts
  • 3/8" inner diameter suits common PVC tubing sizes

Chrome G 1/4 Barb Fitting

This chrome-plated brass barb fitting connects 3/8 inch inner-diameter PVC tubing to any component with a G 1/4 thread. The pre-installed O-ring seals the joint without extra tape or compound. It is aimed at builders assembling a custom liquid-cooling loop who need a reliable, high-flow connection.

3/8 ID Capacity and Headroom

The 9.5 mm bore matches standard 3/8 inch tubing and supports typical loop flow rates without restriction. A single fitting adds negligible pressure drop, so it works in series with multiple blocks and radiators. It does not adapt to larger 1/2 inch tubing or smaller 1/4 inch tubing, so loops using those sizes need different barbs.

Compact Brass Build and Daily Use

The all-brass body weighs 14 grams and measures 22 by 26 mm, leaving clearance in tight port clusters. Chrome plating resists corrosion and keeps the finish bright after repeated coolant changes. The G 1/4 thread fits standard water blocks, pumps, radiators and reservoirs, letting the builder tighten by hand or with a light wrench.

Highlights

  • Leak-free high-flow design ensures reliable liquid cooling
  • Chrome-plated brass construction resists corrosion and looks clean
  • Standard G 1/4 thread fits most water-block ports
  • Pre-installed O-ring speeds up assembly with no extra parts
  • 3/8" inner diameter suits common PVC tubing sizes

Specifications

BrandThermaltake
ModelCL-W040-CU00SL-A
TypeFittings
FeaturesDimension: ?22 x 26 (H) (mm)
Applicable: ID : 3/8”( 9.5 mm )
Weight: 14 g
Material: CU
Screw Thread: G 1/4
Shipping weight0.01 kg
Package size74 × 38 × 30 mm

Questions about this item

Will the G 1/4 thread on this 3/8" ID fitting match the ports on my existing water blocks and radiators?

Yes, the G 1/4 screw thread is the standard size used on most water-cooling components, so it will screw directly into your current blocks and radiators.

How can I confirm the chrome-plated brass fitting is sealed properly after installation?

Tighten the fitting by hand plus a quarter turn with a spanner, then run the loop under pressure; the pre-installed O-ring should show no drips at the 3/8" barb or the G 1/4 base.

Does the package include clamps or tubing for the 3/8" ID connection, or must I buy them separately?

Only the fitting itself is supplied; you will need to purchase 3/8" ID PVC tubing and suitable clamps or compression rings separately.

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