| 摘要 |
PROBLEM TO BE SOLVED: To provide a PCV valve to be easily installed in a fitting hole of an engine case without lowering rigidity of a main body part. SOLUTION: This PCV valve 1 to be installed in the fitting hole 2a of the engine case 2 by clearance fitting has a main body part 3 having sufficient rigidity. The main body part 3 is provided with an outside lock part, namely a lock projection 4, and a lock member 5 separately structured from the main body part 3 and installed in the main body part 3. The lock member 5 has inside lock parts, namely lock pieces 11a and 11b, projected outward of the main body part 3 and an elastic support part for elastically displaceably supporting the lock pieces in the radial direction of the main body part 3. When the PCV valve 1 is installed in the fitting hole 2a, the lock projection 4 and the lock pieces 11a and 11b pinch the case 2 through a seal member 6.
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