http://team358.org/files/pneumatic/F...structions.pdf
As to legality, it was asked on Q&A
Q419 Q. Are the older KoP Festo VPLE18-M5H valve legal for use? The specification from FESTO are obsolete, however these valves were legal in previous FRC seasons.
FRC0997 on 2013-02-04 | 4 Followers
A. To be legal for use, any pneumatic solenoid valve must meet the requirements of all ROBOT Rules, specifically, [R78]-C. Per Section 4.1, the Team is responsible for proving a part's legality during Inspection.
What's the R77 violation?