Valve Rebuild Kit For Use With Grainger Item Number 4NWZ2 4NWZ5 6WTV7 6WTV8 For Use With Mfr Model Number 8220G403 120/60 110/50 DA 8220G406 120/60 110/50 DA SU8220G406 120/60 110/50 A EF8220G406 120/60 110/50 DA Includes Body Gasket Core Diaphragm/Spring Sub-Assembly Disc Holder Spring Plug Nut Gasket Pug Nut Assembly Solenoid Base Gasket