Starting at $392.00 Starting at $313.60


  • Available in 1/2 inch to 4 inch meters
  • Flow ranges to 600 GPM
  • Fitting Type: NPT, Spigot, Flange (3 and 4-inch models)
  • Accuracy: ±3%
  • 225 PSIG Pressure Rating at 73°F
  • Temperature Range 32 to 140°F (0 to 60°C)
  • Display and/or pulse output available

The GPI TM Series Water Meter is a durable lightweight flow meter available in sizes from 1/2 to 4 inches and flow rates from 1-10 GPM to 60-600 GPM. With a basic accuracy of ±3%, the TM Series is well suited for sub-metering facility water usage, small waste water treatment equipment, or water based cooling systems. The TM Series is available with a range of fittings, including: flange, NPT or schedule 80 spigots. These GPI Flow Meters feature an LED readout and/or pulse output that can determine batch, cumulative totals and rate of flow in gallons, liters or cubic feet.

Wetted Materials

  • Housing: PVC
  • Bearings: ceramic (1/2 to 2-inch models; PEEK (3 and 4 inch models)
  • Shaft: tungsten carbide (1/2 to 2-inch models; stainless steel (3 and 4 inch models)
  • Rotor: PVDF (1/2 to 2-inch models; acetal (3 and 4 inch models)

This product can be used in the following applications:

Here's how some of our customers use this product...

Inexpensive Batch Control

The Background: The customer, a water treatment company focusing on corrosion control, is developing new procedures and requires a flow meter to be used as part of their testing protocol.

The Problem: The flow meter must be compatible with a batch controller and price is a major consideration.

The Solution: We recommended the GPI TM series with pulse output paired with the KEP MB2 batch controller. These were used to control a Georg Fisher Type 104 ball valve. This set-up allows precise batching at a great price.

Part Number Flow Rate / Size Display / Output Price Available
5 to 50 GPM; 1 inch
Electronic display
$400.00 3 in stock
1 to 10 GPM; 1/2 inch
Electronic display
$313.60 2 in stock
2 to 20 GPM; 3/4 inch
Electronic display
$344.80 2 in stock
20 to 200 GPM; 2 inches
Electronic display
$484.80 2 in stock
10 to 100 GPM; 1 1/2 inches
Electronic display
$447.20 1 in stock
20 to 200 GPM; 2 inches
Electronic display
$520.80 1 in stock

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