Brand: GC Valves Item: Rebuild kit For Use With: NS211 series DC valves ending CG4 and DG4 Kit Includes: Diaphragm assembly, plunger-seat disc-spring assembly, plunger tube, body O-ring and operator O-ring GC Valves rebuild kit, for use with NS211 series DC valves ending CG4 and DG4, includes diaphragm assembly, plunger-seat disc-spring assembly, plunger tube, body O-ring and operator O-ring.