The Pentair Replacement 350015 Volute Assembly is a standard pool pump designed for in-ground pools with a minimum pump power requirement of 2hp. Manufactured by Pentair, this single-speed pump is suitable for use with Pentair Whisperflo/IntelliFlo pool and spa pumps. It is an interchange part number 357149 and is ideal for maintaining the proper flow rate in your pool system. Pool Princess Brand