Danfoss 060 5249 Pressure Control 30067439 890 Optimal Ductility: The 5% silver Optimal Ductility: The 5% silver content improves the alloy's ability to withstand thermal cycling and mechanical stress in refrigeration circuits replacing the wheel with genuine Carrier parts is the most reliable way to ensure the system meets original factory airflow specifications and maintains safe while the high pressure side typically features a fixed differential of approximately 60 psi to ensure proper system stabilization before manual reset is possible The low pressure side features an adjustable range of 6" Hg to 108 psig with an automatic reset