Oklahoma Safety Equipment Company is an ISO 9001 certified rupture disk manufacturer that sets the industry standard for rupture disks and holders. OSECO provides the widest assortment of metal and graphite rupture disks, burst disk alarm sensors, and rupture panels for vessel protection and safety relief valve isolation.

WellMark/Cemco-Major manufactures liquid level switches, indicators, and point level electronic controls for automatically measuring liquid levels in atmospheric and pressurized tanks to ninety feet high. Wellmark/Cemco-Major also offers pneumatic valve and controls for storage tanks.

For over 65 years OCECO has been manufacturing high-quality safety equipment for flammable liquid storage and waste gas disposal systems. OCECO equipment has earned world-wide recognition for unsurpassed records of safety, performance and durability. For waste water treatment systems, OCECO offers a full line of safety equipment for fire prevention and waste gas disposal.

Klinger®/Davis Controls™ manufactures magnetic level gauges that are particularly suited for dangerous and/or toxic liquid and gas services. Klinger magnetic liquid level gauges employ a sealed chamber fabricated from seamless tubing. Sealed one-piece chambers eliminate glass breakage and gasket leakage to atmosphere.

Tornado Flare Systems produces high quality breather valves, vacuum and pressure relief valves, vents, flame arresters, level indicators, and more.

Rupture Pin Technology’s patent pending Relief Valve and Emergency Shutdown Valve feature a buckling pin which obeys Euler’s Law, making it a safe alternative to the use of rupture disks.

Taylor Valve Technology manufactures valves for fluid and gas transmission, plus spring and pilot-operated relief valves but also includes an additional division: Vaetrix, which is an innovative electronics manufacturing group.