Established in Oklahoma City in 1981, WellMark® began business with a single product line, a cantilever-style liquid level control. Throughout the following sixteen years WellMark expanded its offering, adding several other oil/gas production-related products. By 1997 they had acquired CEMCO/Major, two companies who were well respected in their own rights, expanding their product offering even further. Today, WellMark® produces a comprehensive range of liquid and pneumatic controls and valves.
1903 SE 29th Street
Oklahoma City, OK 73129