Bykski B-FMpa-HC-V2 Premium Hexagonal Transparent Acrylic Flow Meter

Bykski B-FMpa-HC-V2 Premium Hexagonal Transparent Acrylic Flow Meter

TL;DR: The B-FMpa-HC-V2 is a hexagonal acrylic flow indicator that gives a clear visual read on whether coolant is moving through the loop. Two G1/4 ports let it sit inline anywhere a standard fitting would go, and an internal rotor spins whenever flow passes through the unit. An integrated 5V 3-pin...

Common Applications

The B-FMpa-HC-V2 is a hexagonal acrylic flow indicator that gives a clear visual read on whether coolant is moving through the loop. Two G1/4 ports let it sit inline anywhere a standard fitting would go, and an internal rotor spins whenever flow passes through the unit. An integrated 5V 3-pin addressable RGB element illuminates the rotor and acrylic housing, so the indicator doubles as a lighting feature. The indicator is passive and reports the presence of flow only - it is not a calibrated flow meter and does not display flow rate in liters per hour.

Frequently Asked Questions

Q: Does this measure exact flow rate?

A: No. It is a visual flow indicator. The rotor spins when coolant is moving, but the unit does not report a calibrated L/h or GPM value.

Q: What ARGB connector does it use?

A: Standard 5V 3-pin addressable RGB. Do not plug it into a 12V 4-pin RGB header or the LEDs will be destroyed.

Q: Where should I install it in the loop?

A: Anywhere with adequate flow, typically right after the pump or on the reservoir output, where the rotor will spin steadily.

Q: Is it safe to use with an aluminum radiator?

A: The body is PMMA acrylic and has no metal in the wetted path, but the rest of your loop matters. Bykski blocks and fittings are copper/brass; mixing them with aluminum radiators causes galvanic corrosion regardless of this indicator.

Q: What's in the box?

A: One hexagonal flow indicator with two G1/4 ports, the integrated 5V 3-pin ARGB module, and mounting screws. Fittings, plugs and an ARGB controller are not included.