Internationally Approved Product
FMApprovedGERAND
GVI
TORNATECH
A fire pump flowmeter is a measuring system installed on the pump test line to measure the water flow delivered by the pump during fire pump performance tests. The flow read during the test is compared with the pump's rated capacity to verify whether the pump delivers the required performance. Pump flow, measuring range and connection size are evaluated together when selecting a flowmeter for the test line.
The Tornatech GT-FluxFP is a flowmeter consisting of an orifice plate and a float-type bypass indicator with a sight glass. Flow is diverted into the bypass line by the pressure differential across the orifice plate, and the position of the float shows the flow rate directly. The manufacturer states that the system requires no purging before use and no periodic recalibration, and that the reading remains stable without fluctuation.
The product is offered in nominal sizes from 2″/DN50 to 12″/DN300 with grooved connections and is selected according to pump capacities of 50 – 5,000 USgpm. The orifice plate can be installed horizontally or vertically; the indicator is fitted tool-free with a single threaded connection.
The GT-FluxFP is approved under FM Approvals Class 1046 (Fire Pump Flowmeter Systems). According to Tornatech's specification document, the meter can indicate flow up to 175% of the pump's rated flow.
Fire pump flowmeters can also be supplied under the GVI and Gerand brands.
| Specification | Value |
|---|---|
| Measuring Principle | Orifice plate + float-type bypass indicator with sight glass |
| Nominal Size | 2″/DN50 – 12″/DN300, grooved connection |
| Pump Capacity | 50 – 5,000 USgpm (185 – 19,000 l/min) |
| Measuring Range | 20 – 10,000 USgpm (75 – 38,000 l/min) |
| Accuracy | ±2% of full scale (FM) |
| Temperature / Medium | +4 °C – +50 °C / water |
| Material | 2″–4″: stainless steel; 6″–12″: painted steel (RAL 3002) |
| Approval | FM Approvals Class 1046 (PR455499) |
Technical values are based on manufacturer documents; confirm against the current data sheet before ordering.
Fire pump rooms and pump test lines
Commissioning and periodic pump performance tests
Pump stations supplying sprinkler and hydrant systems
Packaged and container-type fire pump roomsOther equipment considered together with the Fire Pump Flowmeter in the fire pump room:
