This wheel is designed for a 5/16" (

Ease of Service: Engineered for quick field replacement using standard HVAC technician tools

My existing relay has fewer pins

and PG9YAB series

GC Valves KS211AF02L7FG9 Repair Kit Els PW 17895 This wheel is designed forThe GC Valves KS211AF02L7FG9 Repair Kit is a precision engineered solution specifically designed for the S211 Series 2 way normally closed piloted solenoid valves. As a veteran in the field, you know that maintaining the integrity of industrial fluid systems requires components that meet exact OEM tolerances. This kit includes the critical diaphragm assembly and high durability O rings required to restore positive shutoff and prevent sluggish