Leonard Valve Co. has hired Gateway Representatives, St. Louis, MO, to control the company's sales territories in Eastern Missouri, Southern Illinois and Western Kentucky.
Armstrong has appointed two firms as as commercial design/build representatives: A.D.E. Systems, Inc., for its New York City territory, and D&B Engineering Inc. for Northern New Jersey.
Viessmann Manufacturing Co. (U.S.) Inc. has appointed Osborne Co. Inc., Livermore, CA, as Viessmann sales representative for Northern Nevada and Northern California.
Armstrong Hot Water Group has announced the appointment of Mechanical Solutions as a Hot Water Group Specialist, representing its full range of water temperature controls in CT, MA, NH, ME, VT, and RI.