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Mechanical, Build & Pneumatics·Lesson 31 of 47

Required Components and Passing Inspection

The exact components inspectors require on any pneumatic robot, and how to be ready for inspection day.

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If You Use Pneumatics, You Must Include...

The Game Manual (R805) lists a set of mandatory components for any robot with a pneumatic system. Build all of these or your robot fails inspection:

  1. One legal compressor — the only air source, within the 1.1 cfm limit (R806).
  2. A pressure relief valve (R811) — connected directly to the compressor with hard fittings and set to release at 125 psi.
  3. A pressure switch or analog pressure sensor (R812) — the Nason SM-2B-115R/443 pressure switch and/or the REV Analog Pressure Sensor (REV-11-1107), wired into the high-pressure circuit so the controller stops the compressor at the limit.
  4. At least one pressure vent plug (R813) — and it must be accessible without removing other components so air can be dumped safely.
  5. Two pressure gauges (R810) — one showing stored pressure (high side) and one showing working pressure (downstream of the regulator), both in a visible location.
  6. One primary working-pressure regulator (R808) — adjustable, relieving, capped at 60 psi outlet.

Inspector Checks

Inspectors verify each of these physically. They confirm the relief valve is hard-plumbed to the compressor, that gauges are present and readable, that the vent plug is reachable, that no illegal parts sit on the high-pressure side, and that all components carry adequate pressure ratings. They will check that the compressor and stored-pressure shutoff behave correctly.

Be Inspection-Ready

  • Label or know where each required component is so you can point to it quickly.
  • Keep the vent plug genuinely accessible — do not bury it behind a battery or bumper.
  • Make sure gauges face outward and are legible.
  • Have spare fittings, tubing, and PTFE tape on hand; small leaks are the most common last-minute fix.
  • Re-read the current FRC Inspection Checklist (published each season) before the event so there are no surprises.

Common Inspection Failures

Missing or unreadable gauges, a vent plug buried behind other parts, a relief valve connected with tubing instead of hard fittings, illegal components on the high-pressure side, and leaks that prevent the system from holding pressure. All are avoidable with the checklist and a careful pre-event review.

Key takeaways

  • Mandatory parts (R805): compressor, relief valve (hard-mounted, 125 psi), pressure switch/sensor, accessible vent plug, two gauges, and one primary regulator.
  • The relief valve must connect directly to the compressor with hard fittings, not tubing (R811).
  • The vent plug must be reachable without removing other components (R813), and both gauges must be visible and legible (R810).
  • Review the season's FRC Inspection Checklist beforehand; missing gauges, buried vent plugs, and leaks are common failures.

Lesson quiz

Required

Answer all 3 questions correctly to complete this lesson.

1.In an FRC pneumatic system, the pressure switch that controls the compressor must be wired directly to which device?

2.Where must pressure gauges be located on an inspection-legal FRC pneumatic system?

3.Which component is required so that a robot's stored pneumatic pressure can be safely released by hand during inspection?

Answer every question to submit.