Omtec standard is to place the first and last PPD Positioner Pads 1.25 inches (31.71MM) C/L from each end of the main body (between frame dimension). The other PPD Positioner Pads are evenly spaced. Omtec PPD Positioner Pad Strips may be any length. The number of PPD Positioner Pads on a strip may be varied and located on any center lines desired. The minimum center line is 2 inches (50.8mm).
Omtec PPD Positioner Pads are pneumatic (air operated). The air in feed line is a single 0.180 I.D. X 0.265 O.D. polyurethane tube under the strip between the first and last ball. The standard in feed tube supplied is 8 inches (203mm) long attached between the first and second Pad, but can be any length or location on the strip desired. Virtually any air control device may operate Omtec PPD Positioner Pad Strips. In the majority of applications simple non-electric foot and hand valves are used. The Omtec PPD Positioner Pads use very low air volume, it is usually not a consideration. Each up and down cycle of one ball uses .00038 cubic feet (.0000108 cubic meter). If needed sensing device operation using electric solenoids valves may be used, control kits are available.