Liquid and Gas Controls For A New Level of Success 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 we 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.
Available Products Hydrostatic Headswitches • Electric Level Controls • Pneumatic Level Controls • ASME Section VIII certified Safety Relief Valves • Pressure-Reducing Regulators • Backpressure Regulators • Chemical Injection Pumps (pneumatic and environmentally-friendly solar powered) • Diaphragm-Operated Motor Valves • Throttling & Choke Valves • Mechanical Dump Controls & Valves.
Innovation  WellMark® continues to lead the way, helping oil and gas producers meet their EPA Natural Gas STAR Program or Kyoto pledge of reducing methane emissions by developing environmentally-conscious alternatives to conventional high-bleed pneumatic control devices. These include the industry-renowned MIZER® Pilot Valve – a unique product which painlessly converts many high-bleed pneumatic devices to low-bleed. This patented device is licensed for manufacture exclusively by WellMark and has been successfully employed by many of the world’s major producers to substantially reduce their methane emissions, easily and effectively.
Oklahoma City Chamber of Commerce Metro 50 Award As a member of the Oklahoma City Chamber of Commerce, WellMark has been honored for the last three years by the Chamber as being one of the top 50 fastest growing privately-held businesses in the Oklahoma City metropolitan area. This has been achieved through our steadfast dedication to fulfilling our customer’s needs, continually raising the bar with a consistently higher level of Customer Service, Quality and Value.
		Customer Service... There when you need us.  WellMark®’s engineering and customer service teams are available to serve you. We can assist in specifying your project, coordinating documentation or putting you in touch with a local representative. Call us today and let us help you develop a solution for your particular application.