The required services to be provided are replacement of 20+ year old compressed gas switching shuttle valve stations between A&B compressed gas cylinders or Dewars for compressed gases (CO2, HPN2, UHPN2 and Argon) with new automatic switching shuttle valve stations that automatically switch to the alternate compressed gas cylinders or Dewars and provide visual notification of which cylinders or Dewars are in use along with the pressures of each bank and the out-going pressure to the building. Replace all compressed gas connection hoses and associated check valves for all compressed gas distribution within the dedicated compressed gas storage for the following: • CO2 • HPN2 • UHPN2 • Argon • UHPHe • ARH2 • P10 • UHPCH4 • UHRN2 • ZGA Work to be completed as required to minimize disruption to laboratory testing