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QR-S Mechanical Damping Device



Product Features
  • Set pressure adjustable with QR-S installed
  • Rated to 25 psig MAOP
  • Compatible with combustion regulators 121 and 122 and Commercial 243

Improve pressure control on commercial and industrial operations and enhance the speed of response on pressure regulators with the Sensus QR-S mechanical damping device.

This patent-pending device lowers your energy cost with high-efficiency burners and boilers. By simply removing a regulator’s spring tower cap and installing the QR-S in its place, this device prevents high lock-up or excessive pressure-drop conditions. It can be installed on new products or retrofitted to existing products already installed.


HE Boilers Installations
HE Generators Installations
Benefits to you
Enhances response time
Eliminates extreme pressure drop at start-up
Retrofits easily in the field
Provides a cost-effective solution
Patent-pending design