The Design Envelope Vertical-In-Line Retrofit allows building owners to replace the moving parts of an installed Armstrong constant speed pump while retaining the existing pump casing, insulation and piping.
The solution provides owners of existing constant speed pumps with an opportunity to save up to 70% on energy costs by upgrading to variable speed. The Design Envelope technology accommodates future changes in flow requirements and its variable speed operation means longer equipment life (20%-30%), and greater reliability.
Design Envelope solutions don’t require differential pressure sensors and because they reuse the existing casing, there's no need for a pressure test after the installation. With all of these savings in installation time, labour costs for the retrofit project are kept to a minimum.