In high-efficiency mini-split systems

always match the valve to the refrigerant type indicated on the unit nameplate

promoting rapid burner light-off and reducing ignition module lockout errors

By integrating this factory authorized part

Armstrong Fluid Technology 806168-001 Coupler R-448A In high-efficiency mini-split systemsThe Armstrong Fluid Technology 806168 001 Coupler is a precision engineered OEM replacement part designed for high performance circulator pumps. Constructed from durable cast iron, this 4 spring type coupler is specifically manufactured to facilitate a secure, vibration dampening connection between the motor and the pump shaft. It is a critical component for maintaining the operational integrity of Armstrong S 45 and S 46 models within hydronic