The Humphrey Series 555, 565 and 575 Electro-pneumatic Valve and Sensor Systems are complete valve/wiring/plumbing solutions designed exclusively for pneumatically actuated accumulation-type conveyors. Use with common photo-electric sensors to electrically operate pneumatic actuators controlling drive belts and carrier rollers. The 555, 565 and 575 replace sensor rollers and mechanically operated pneumatic systems with electronic controls and intelligence.
