Company Profile

Flowvis Arrays: Integrated Swimming Pool Filtration Flow Safety Indicators

Quick Answer: Flowvis Arrays are visual flow indication devices built for swimming pool filtration and water feature circulation loops. These swimming pool filtration flow safety indicators show real time flow status and help operators confirm safe circulation before pumps, heaters, or chemical dosing systems run. Silver Automation Instruments supplies standard and sensor based models matched to pipe size and site conditions.

Common Filtration Flow Problems That Flowvis Arrays Solve

In swimming pool plants, most operators only check pump pressure. That single reading misses partial blockages, air pockets, or a closed valve on a branch line. Flowvis Arrays add a direct visual check at the filter inlet, heater outlet, or return line. You see movement, you see low flow, and you stop the pump before damage.

In practice, a blocked strainer in a public pool in Malaysia caused a filter pump to run dry for hours. The operator only noticed after the motor overheated. A flow indicator would have shown the drop in flow immediately.

What Flowvis Arrays Include

A standard Flowvis Array for pool filtration consists of a clear flow tube or sight window, an impeller or spinner, and a calibrated scale marked in liters per minute or cubic meters per hour. The body material is clear PVC-U or acrylic for most commercial pools. For saltwater pools, we specify PVC-U or PP with titanium or Hastelloy internals. For heated spa lines up to 60 degrees Celsius, the same array works because the O-rings are EPDM or FKM.

We have seen customers in Australia use these devices on 50 mm and 80 mm return lines. They want direct visual proof that water is moving before the chlorine dosing pump starts.

Flow Safety Indicators for Pumps, Heaters, and Chemical Dosing

A flow safety indicator is not just a sight glass. It can include a reed switch or a Hall effect sensor that sends a 4-20 mA signal or a dry contact to the control panel. For example, a 50 mm Flowvis Array with a paddle wheel output can tell the PLC that flow is above 10 cubic meters per hour. If flow drops below the set point, the dosing pump stops. This protects the heat exchanger from corrosion and prevents chlorine gas buildup in indoor plant rooms.

In the Middle East, we often supply weatherproof junction boxes on these sensors because outdoor pool plants face high humidity and sand.

Recommended Model Selection by Pipe Size and Flow Range

For pool filter lines from DN40 to DN65, a paddle wheel Flowvis Array with a range of 2 to 30 cubic meters per hour is usually enough. For DN80 to DN100, use a unit rated for 5 to 60 cubic meters per hour. For DN150 collector lines or water park features, we supply units up to 200 cubic meters per hour. Always match the array connection to your actual pipe size. Do not reduce the sight glass below the pipe diameter because the pressure drop increases.

We also ask for operating pressure. Standard pool systems run at PN10. Larger water features may need PN16 flanges or threaded connections.

Why This Matters for Commercial Pools and Water Parks

A public swimming pool cannot shut down for a full day because of a broken pump seal. Flowvis Arrays give maintenance teams a five second visual check during morning rounds. A resort in Vietnam uses one unit on each sand filter outlet. Their maintenance log includes the flow reading at 6:00 am. If the reading moves down by more than 15 percent, they backwash the filter. This simple routine extended the filter media life by two years. That is the kind of detail engineers remember during procurement.

Installation and Maintenance Notes

Install Flowvis Arrays in a straight pipe section. Keep at least 10 pipe diameters upstream and 5 pipe diameters downstream from elbows or pump