Computer cooling system part BitsPower BP-BS90R3D — Brass, black finish

BitsPower BP-BS90R3D — Brass, black finish is a precision component for custom PC liquid cooling loops. Made from high-quality brass with a black sparkle nickel finish, this 90-degree rotary fitting integrates a Hi-Flow design and triple 360-degree rotation to enable flexible tube routing while maintaining reliable coolant flow. The fitting includes a concealed O-ring arrangement for leak resistance and a durable construction intended for long-term use in desktop water-cooling assemblies.

Advantages

The brass construction provides corrosion resistance and mechanical strength compared with common alloys, while the Hi-Flow internal profile minimizes flow restriction in tight bends. The triple 360-degree rotation allows independent adjustment of each axis for precise positioning without stressing tubing or other fittings. The black sparkle nickel finish improves surface durability and offers a consistent aesthetic for black-themed builds. The integrated hidden O-ring design reduces the visible sealing hardware and supports secure, low-leak connections.

Suitable for

• Custom PC liquid cooling loops requiring 90-degree routing
• Replacing or upgrading fittings in desktop water-cooling assemblies
• Tight case layouts where adjustable rotary fittings are needed
• Builds that require corrosion-resistant metal fittings with a black finish

Key specifications

• Material: Brass
• Finish: Black sparkle nickel plating
• Type: 90-degree rotary fitting
• Rotation: Triple 360-degree rotation (three axes)
• Flow profile: Hi-Flow design to minimize restriction
• Seal: Concealed O-ring sealing

How to use

Install the fitting into the cooling loop by threading or connecting it to compatible ports or hose ends according to the system's connection standard. Adjust each axis using the triple rotation to orient the fitting for optimal tube routing and clearance. Ensure the concealed O-ring is seated correctly and perform a pressure or leak test after assembly following standard water-cooling safety procedures. Tighten connections to manufacturer-recommended torque to avoid overtightening and potential damage to fittings or ports.

Recommendations

Use compatible tubing and connection standards to ensure proper sealing. Before introducing coolant, flush and dry the loop components; after installation, perform a full leak test for several hours. Avoid aggressive cleaning agents that may affect the finish or sealing elements, and inspect O-rings periodically for wear if the system is serviced frequently.