Armstrong Fluid Technology has announced the introduction of its COMPASS H high-efficiency wet-rotor circulators with advanced Design Envelope variable speed technology.

The company says the COMPASS H features a Quadratic Sensorless flow control algorithm that intelligently responds to system demand to consistently provide only the necessary flow.

The COMPASS H includes a broad operating range of up to 20 ft of head and up to 20 USgpm flow. Also, design envelope technology that provides sensorless demand-based control. The circulators can communicate with most modern boilers for improved boiler efficiency.

--Armstrong Fluid Technology