SHV-Series sliding hand valves are 4-way, 3-position, rotary disc, manual-operated air valves. Recomended for stationary air cylinders, arbor presses, and/or as a throttling valve for positioning air cylinder.The 90° lever movement provides reliable switching function by the rotary disc. The rotary disc is under consistent spring pressure to provide a leak-proof seal. In center position, inlet is closed to pressure, and the outlet is closed to exhaust. Each position is positively detented and the removable handle prevents unauthorized movement.Unit should be mounted in a protected position, free from excessive vibration. Use of filtered and lubricated air is highly recommended for maximum valve life and minimum maintenance.