DIY Bullet-Proof No-Leak PCV Valve

by Spectralsamurai (


Parts Required: Information: Instructions:
  1. Apply Teflon tape to the threads of the male fitting; use two or
    three good wraps in the correct direction to tighten the tape when screwed in.
  2. Drop the ball bearing into the male fitting.
  3. Screw the male fitting into the female fitting and tighten. Insure there's no
    teflon tape loose inside the fitting or the ball bearing will not move freely.
  4. You're done.

Picture 1: Ball Bearing Inside Female Fitting

Picture 2: Assembled PCV Valve

Picture 3: Size Comparison