DUBAI, UAE, 19 August 2024: Armstrong has introduced larger sizes of the Design Envelope Tango, which the company described as a compact, low-carbon dual pump that ensures uninterrupted service even during maintenance. Making the announcement through a Press Release, Armstrong said the Design Envelope Tango includes two motors and two impeller assemblies in a single casing, with integrated valves that can isolate one side of the pump for service, without interrupting flow or affecting occupant comfort.

Armstrong said new sizes include motors ranging from 11 to 30 kilowatts (from 15 to 40 horsepower) that are capable of serving applications up to 160 feet of pressure (2,000 GPM). The company said the pump is a compact solution that combines built-in redundancy with performance and reduced installation costs. The two rotating devices share a single casing, and the installation requires less piping, Armstrong added.

Vertical in-line orientation means the pump is installed in the piping and does not require an inertia base, Armstrong said. The Design Envelope technology includes patented parallel sensor-less operation, increases flow turn-down and provides built-in flow metering for superior flow control, the company said. The energy-efficient design of the Tango reduces operating costs by up to 80% and lifecycle costs by up to 40%, the company added.

Armstrong said the value of Design Envelope pumps is augmented by Pump Manager, a cloud-based service that provides smart analytics, diagnostics and alerts to support HVAC system efficiency. The company said all Armstrong 360 service and support programmes optimise the lifetime performance of HVAC systems.