[C.I.S.]

Right now we have 1/4 inch fittings on our pneumatic cylinders and solenoid valves. The rules say our maximum tubing size is 1/8 inch inside diameter. Another team told us that we cannot have 1/4 inch fittings on our solenoid valves, so we ordered new valves. However, my question is: Can we use fittings that scale down from 1/4 inch to 1/8 inch, or are our pneumatic cylinders illegal?