Portable grinding and lapping machines for working on following valves:- Globe Valves (Angle Seat) Standard Angles are: 30°, 40°, 60°, 75°, 90° (other angles on request) Working range: DN 10 – 300 mm (3/4"- 12") FLUIDCHEM's In-Situ Valve grinding and lapping machines are suitable for Body Seat Lapping of Globe Valves (Angle Seat) on site and at factory.