SPX Series Low-Flow Paddle Wheel Flow Sensors

SPX Series Low Flow Sensors

These versatile impeller flowmeters are availalble in 3/8”, 1/2”, 3/4”, and 1” nominal pipe sizes with female NPT threads (SAE optional). They employ jewel bearings to allow for very low minimum flow rates and superior life.

With a body material of polypropylene, the SPX is an economical choice for metering water or low corrosion fluids. The lens cover is available in a choice of materials: acrylic for visual flow indication of low-corrosion fluids; polypropylene when more corrosion resistance is needed. The standard rotor assembly is Kynar with tungsten carbide shaft (ceramic shaft optional). The O-ring is EPDM.

The pulse output of the SPX meter is compatible with many different types of controls, including a range of AquaMetrix displays and controls. For rate and total display, the Shark-120/240 controller or SharkTX(P) transmitter (loop powered) models are compatible with the SPX series sensors. They can be mounted in either surface, pipe or panel configurations.


  • Accurate at low flows

  • Simple and durable

  • Compatible with a variety of chemicals

  • Visual flow monitoring

  • Inexpensive

  • Six blade impeller

  • For small pipe sizes (3/8” to 1”)


  • Low flow monitoring

  • Chemical batching and mixing

  • Proportional chemical injection

  • Fertilizer injection

  • Irrigation

  • Process cooling systems

  • Neutralizaton systems

  • Process flow control

  • Filtration systems

SPX Series Datasheet



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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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