Valve Rebuild Kit, Product Type Valve Repair Kit, Includes Core Assembly, Core Guide, Core Tube Assembly, Disc, O-Rings, Piston, Springs, Compatible with Manufacturer Model Number 220/50D, EF8345G001AC240/60, Compatible with Grainger Part Number 3UM17, 3UM18, Compatible with Brand Emerson, Standards UL Listed, Valve Type Solenoid Valves