This apparatus should only be used under the supervision of an occupational therapist.
DO NOT modify or change the specifications without consulting Temple Grandin.

Air System Specifications
Use parts with 1/4th inch (7mm) ports and 1/4th inch (7mm) settings. All hoses 1/4th inch (7mm) Imperial Eastman poly flo tubing (44-P 1/4 or equiv)
Control Valve - Spring loaded: side panels MUST open up and
release
the squeeze when the user of the machine lets go of the handle. Use
Airmite Devices' V4203 spring return 4 way hand ball valve
Airmite Devices Inc.
4739 West Montrose Avenue
Chicago, Illinois
(312)286-3393
Cylinder - Airmite Dar-20 8 inch stroke 2 inch bore, rodclevis and two foot mounts
Flow Control - Standard Industrial 1/4th inch (7mm) brass housing with a knob which can be turned by hand. DON"T put flow controls on valve exhausts - Install as shown.
Regulators - 1/4th inch (7mm) ports. Self relieving typw optimum pressure operating range - 5 to 130 PSI (pounds per square inch)
Safety Valve - Set at 75 PSI (pounds per square inch). MUST BE TAMPER PROOF