Flow indicator BitsPower BP-HFI — black/transparent, 50×56.7×23 mm for computer cooling systems

BitsPower BP-HFI is a compact flow indicator designed for computer liquid cooling systems. With dimensions of 50×56.7×23 mm and a black/transparent finish, this inline indicator provides a visual confirmation of coolant circulation. It is suitable for integration into custom loops, allowing users to observe flow at points near radiators, pumps and reservoirs and to verify that coolant is moving correctly during startup and maintenance.

Advantages

The flow indicator offers a small footprint that fits into tight layouts and maintains visible coolant movement without adding significant bulk. Its transparent section gives clear visual access to the flow path, while the black housing provides a neutral appearance that blends with most system builds. The unit is constructed for straightforward inline installation and provides a passive, power-free means to monitor circulation in a liquid cooling loop.

Suitable for

• Custom water-cooling loops in desktop PCs
• Monitoring flow near radiators and pumps
• Temporary or permanent placement next to reservoirs
• Troubleshooting and maintenance checks of coolant circulation

Key specifications

• Overall dimensions: 50 mm (width) × 56.7 mm (depth) × 23 mm (height)
• Finish: black housing with transparent viewing section
• Inline visual flow indication without electrical power
• Compact form factor for tight installation spaces

How to use

Install the flow indicator inline with existing tubing using compatible fittings and secure connections to prevent leaks. Position the transparent section so it is visible from the case or maintenance access point to observe coolant movement. After installation, fill and bleed the loop according to standard liquid-cooling procedures and check the indicator during pump startup to confirm circulation. Periodically inspect the indicator during routine maintenance to ensure continued flow and to spot air bubbles or blockages.

Usage recommendations

Use compatible tubing and fittings rated for your coolant type and system pressure. During initial filling and later maintenance, monitor the indicator to detect air pockets or restricted flow. Avoid installing the unit where it may be subjected to excessive mechanical stress or kinked tubing. Clean the viewing section as needed with manufacturer-recommended fluids to maintain clear visibility.