TAC Miniture 3 Position 4-Way Manual Valves are miniature lever and rocker valves available in 1/8 PIPE. Compact and rugged, TAC valves provide excellent flow, and are designed for attractve panel-mount signaling or cylinder control, leaving pneumatic plumbing, tubing and venting contained underside. This exhaust center position family of valves are available in types: Detent, Spring Return and a Detent one side, Spring Return other side.