Smart Simulation & Sizing Tools for Every Piping and Equipment Engineer/Designer

22 November 2019

PASS/HYDROSYSTEM 4.3 is released

We are pleased to announce that PASS/HYDROSYSTEM 4.3 is released! The new version contains new features and significant enhancements:

We recommend all customers with active Maintenance Support to download PASS/Hydrosystem 4.3. To update your dongle, please send a request to