​NWS is the industry leader for nuclear safety valve testing.

We have invested in the latest data acquisition hardware to provide the highest accuracy of testing available.

Our test data analysis software is developed in-house, and is backed by over 20 years of data collection and analysis experience.

With multiple high pressure steam test stands, NWS can provide fast turnaround times during short outage schedules or emergencies, and we can provide services on weekends or off-shifts.

NWS writes and maintains customer approved test procedures, and all valves are tested in full compliance with applicable regulations and site specific Technical Specifications.

NWS can support your needs for all types of valve testing including Steam, Liquid, and Air.

Valve Testing and Set-Pressure Certification