Many Haunted Houses Use Servo Valves

Many haunted houses use servo valves to control their animatronics. When something is doing a repeated motion like a Trex reaching out to scare guests, chances are that it’s being moved by a servo valve. Get servo valves at

Servo valvesĀ have a long history of being used in animatronics. From Disney, to jaws and universal pictures. They are reliably able to cause movement.