Armstrong Fluid Technology 816305-325K Impeller Kit R-22 those valves require the KSORI12

those valves require the KSORI12 or KSORI20 kits respectively

By utilizing an OEM pump part

most valves require a minimum difference of 30-70 PSI to move the internal slide

This is an OEM part specifically calibrated for Lennox equipment

Armstrong Fluid Technology 816305-325K Impeller Kit R-22 those valves require the KSORI12The Armstrong Fluid Technology 816305 325K Impeller Kit is a precision engineered replacement component designed for high efficiency fluid circulation. Featuring a 4. 25" plastic impeller, this kit is vital for maintaining the hydraulic performance and pump efficiency of your HVAC system. Engineered for compatibility with specific Armstrong series pumps, the kit includes the necessary hardware to ensure a secure fit and optimal flow rate. Using