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To operate efficiently VRF or VRV* systems are operating at significantly higher pressures than we are used to seeing with Hydronic systems. Test pressures can reach 700 psi with 200F to 300F operating temperatures. These systems are operating at the high end of your piping components and as such are introducing stress levels that need additional design consideration.
The VRF Expansion joints, Seismic expansion joints and Flex connectors from Metraflex are designed specifically to compensate for these additional loads and stresses.
*VRV is a trademark of Daiken Industries, LTD
