Armstrong Series 4312 Twin Pumps is a Pipe-mounted 2-pump unit with integrated intelligent controls for space-saving installation, superior energy performance, and full redundancy during operation. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations.

Applications: HVAC-system pumping; general purpose pumping; industrial/process pumping (water or glycol based). Armstrong Design Envelope Pumps with integrated controllers are OSHPD pre-approved.

Power range: 1 hp to 40 hp (0.75 kW to 30 kW)

Size: 2″ to 6” (50 mm to 150 mm)