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 Webstone Valve Innovation 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.