Home » Sioux Chief Acquires E&S Valve Sioux Chief Acquires E&S Valve June 13, 2000 Reprints No Comments Sioux Chief announced it acquired E&S Valves, a manufacturer of two drain trap primer valve models. E&S Valves is located in Tualatin, Ore., and has been in business for more than 40 years. Did you enjoy this article? Click here to subscribe to Plumbing & Mechanical. Related Articles Sioux Chief lead-free push fitting system Sioux Chief featured on Manufacturing Marvels Sioux Chief tile-in shower drain head Sioux Chief catalog Related Products Valve Handbook Lessons Learned Servicing Boilers E.D.R. - Ratings for Every Darn Radiator (and convector) you'll probably ever see Facility Piping Systems Handbook, 3rd Ed. Related Events To Trim or Not To Trim? – That is the Question! Coffee with Caleffi and John Siegenthaler: Air Source and Water Source Heat Pump Systems. 2016 Chicago Design Summit Related Directories Valutech Inc. Caleffi Hydronic Solutions You must login or register in order to post a comment. Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.