Replacement Auto Drain, Compatible with Grainger Part Number 4HCY9, 4HEP3, 4HEP4, 4HEP5, 4HEP6, 4HEP7, 4HEP8, 4HEP9, 4HER1, 4HER2, 4HER3, 4HER4, 4HER5, 4HER6, 4HER7, 4HER8, 4HER9, 4HET1, 4HET2, 4HET3, 4HET4, 4HET5, 4HET6, 4HET7, 4HET8, 4HET9, 4HEU1,...